Sanha. Produktkatalog (2009-2010)

Technical pages

VI.1

In the press fitting technology, a form-fitting connection is manufactured by com-
mon radial deformation of fittings and pipe. An additionally inserted ring gasket
made of elastic polymer ensures the sealing function against leaks of the con-
ducted medium
The special features of both the

press fittings of copper and copper

alloys and the

NiroSan

press systems of stainless steel are the constructi-

on and manufacture of the socket couplings.They enable reliable processing and

ensure a permanently sealed connection. With both systems, the main feature
in the development was that all pressing jaws employed for press connections,
Type M-MM (mechanical connector of metal for metal pipes) and pressing tools
can be approved. This applies in particular from the viewpoint of security. For
the craftsman this means that there is no loss of the system guarantee due to a
change of the pressing jaws in case of utilization of

products - which

is different from products by other manufacturers.

1. 1. Press connection

Quick reference guide to

NiroSan

press fitting system of stainless steel, Material No. 1.4404

1.1.

NiroSan

press fitting system

– Drinking water
– Processed water
– Heating system
– Cooling water
– Condensate
– Utility and rain water

– Compressed air
– Solar thermal power
– Cooling water
– Bulk goods
– Applications in industry

d = 15 – 22 mm
PN 40
d = 28 – 35 mm
PN 25
d = 42 – 108 mm
PN 16

d = 15 – 54 mm
Free selection of pressing tools
and jaws and/or slings
(see chapter 1.7)
d = 76.1 - 108 mm ECO 3/ECO
301
(see chapter 1.7)

d = 15 – 54 mm
Free selection of pressing tools
and jaws and/or slings
(see chapter 1.7)
d = 76.1 – 108 mm ECO 3/ECO
301
(see chapter 1.7)

d = 15 – 108 mm
PN 5 / GT 5
Underground laying not admissible

EPDM

Color: black
Max. continuous
temp.: -30°C up to 120°C
(short time up to 150°C)
Requirements according
to KTW satisfied

d = 15 – 54 mm
Free selection of pressing tools
and jaws and/or slings
(see chapter 1.7)
d = 76.1 – 108 mm ECO 3/ECO
301
(see chapter 1.7)

– Flammable gases

according to DVGW G 260
and G 262

HNBR

Color: yellow
Max. continuous temp.:
-20°C to 70°C
Requirements according to DVGW
VP 614 satisfied

Special sealing ring

Color: red
Max. continuous temp.:
-20°C to 200°C
(according to medium)
Solar thermal power
up to 200°C
(short time up to 280°C)
Resistant against oils and
water-glycol mixture

Special sealing ring

Max. continuous temp.:
-20°C to 200°C
(according to medium)
Solar thermal power
to 200°C
(short time up to 280°C)
Resistant against oils and
water-glycol mixture

Materials:

Fittings from pipe:
Threaded fittings:
Stainless steel parts:

Pipes:

Pipe inside surface:

Material No.: 1.4404 according to EN 10088
Material No.: 1.4571 according to EN 10088
Material No.: 1.4408 according to EN 10283

Material No.: 1.4404 according to EN 10088
Pipe dimensions according to EN 10312 and DVGW-GW 541 bright-annealed and solution-heat-treated, strength limited in upper
values according to EN 10312, free of harmful component parts and according

to the special requirements of GW DVGW-Code of Practice 541

NiroSan

Press

(Series 9000)

NiroSan

Press Gas

(Series 17000)

NiroSan

Press Industry

(Series 18000)

– Applications, which must be free of

paint-wetting disturbing substances
(automobile industry, paint industry,
paint work, aircraft industry, etc.)

d = 15 – 22 mm
PN 40
d = 28 – 35 mm
PN 25
d = 42 – 108 mm
PN 16

NiroSan

Press SF

(Series 19000)

Field of application

Dim./Nominal pressure

Seal

Tool

Technical pages

VI.2

Quick reference guide to

press fittings of copper and copper alloys

1.2.

press fittings of copper and copper alloys

– Drinking water
– Heating system
– Cooling water
– Utility and rain water

d = 12 – 108 mm
PN 16

Fittings without additional
colored exterior identification

d = 12 – 54 mm
PN 5 / GT 5

Soil transfer not admissible

d = 12 – 54 mm

PN 16

d = 12 – 54 mm
selection of pressing tools
and jaws and/or slings
(see chapter 1.7)
d = 64 – 108 mm
ECO 3/ ECO 301
(see chapter 1.7)

d = 12 – 54 mm
free selection of pressing tools
and jaws and/or slings
(see chapter 1.7)

Press

(Series 6000/8000)

– Flammable gases

according to G DVGW 260

Press Gas

(Series 10000/11000)

– Solar thermal power
– Cooling water
– Compressed air
– Applications in industry

Press Solar

(Series 12000/13000)

EPDM

Max. continuous temp.:
-30°C up to 120°C
(short time up to 150°C)
Requirements according to KTW
satisfied

HNBR

Color: yellow
Max. continuous temp.:
-20°C up to 70°C

Requirements met to DVGW
VP in 614 satisfied

Special sealing ring

colour :red
Max. contious temp.:
-20 °C bis 200 °C
(depends on medium)
Solar thermal power up to 200 °C
(short time up to 280 °C)
Resistant against oils and
water-glycol mixture

Field of application

Dim./Nominal pressure

Seal

Tool

Materials:

Copperfittings:

Fittings of copper alloys:

Pipes:

Material No.: CW024A (Cu-DHP) according to EN 1254

Material No.: CC491 (CuSn5Zn5Pb5-C) according to EN 1282
with restrictions in accordance with DIN 50930-6

Material No.: CW024A (Cu-DHP) according to EN 1057
(See table in Chapter 1.5 "Approved copper pipes")

Outer diameters and wall thicknesses correspond to EN 1057, Table 3

S (mm)

D (mm)

0,6

0,7

0,8

0,9

1,0

1,1

1,2

1,5

2,0

2,5

3,0

(1)

66,7

76,1

88,9

108

(2)

(1) Only with pressing jaws and slings, whose pressing tracks are cleaned and lubricated.
(2) Only with "Copper only" press sling (

Type No.: 16934)

Technical pages

VI.3

Quick reference guide

NiroTherm

press systems of rustproof steel (not suitable for drinking water)

1.3.

NiroTherm

press system

Quick reference guide

NiroTherm

pressing systems of unalloyed steel and

SANHA Therm

press fittings (not suitable for drinking water)

1.4.

SANHA Therm

pressing systems

d = 15 – 22 mm
PN 40
d = 28 – 35 mm
PN 25
d = 42 – 108 mm
PN 16
Provide pipes with red longitudinal strip

– Heating system
– Cooling water
– Condensate
– Compressed air
– Industry

d = 12 – 54 mm
free selection of presses and jaws
and/or loops (see chapter 1.7)

d = 64 – 108 mm
ECO 3/ECO 301
(see chapter 1.7)

NiroTherm

EPDM

Color: black
Max. continuous temp
-30°C to 120°C
(short-term to 150°C)

Field of application

Dim./Nominal pressure

Seal

Tool

Materials:

Fittings from pipe:
Threaded fitting's:
Stainless steel parts:

Pipes:

Pipe inside surface:

Material No.: 1.4404 according to EN 10088
Material No.: 1.4571 according to EN 10088
Material No.: 1.4408 according to EN 10283

Material-No.: 1.4301 according to EN 10088, pipe dimensions according to EN 10312
Clean and solution-heat-treated, strength limited to upper value,
Marked with red longitudinal stripe and (among other things) the labeling heating, compresed air

According to EN 10312, free from harmful component parts

The

NiroTherm

press fittings can also be connected directly with the

SANHA Therm

system pipe.

d = 15 – 108 mm
PN 16

– Heating system
– Cooling water
– Compressed air (dry)
– Industry

d = 12 – 54 mm
free selection of presses and jaws
and/or loops
(see chapter 1.7)

d = 78.1 – 108 mm
ECO 3/ECO 301
(see chapter 1.7)

Therm

EPDM

Color: black
Max. continuous temp
-30°C to 120°C
(short-term up to 150°C)

Materials:

Copper fittings:

Fittings of copper alloys:

Pipes:

Material-N.: CW024A (Cu-DHP) according to EN 1254, outside and inside surface refined

Material No.: CC491 (CuSn5Zn5Pb5 C) according to EN 1282
Exterior and inside surface refined

Material No.: 1.0034 (E 195) galvanized according to EN 10305
Pipe dimensions according to EN 10312
Externally zinc galvanized, layer thickness between. 7 - 15 µm

Field of application

Dim./Nominal pressure

Seal

Tool

The

NiroTherm

system pipe can also be connected directly with the

SANHA Therm

press fittings.

Technical pages

VI.4

ist the only manufacturer that gives guarantee fort he leak tight-

ness of the pressing joints, regardless of the manufacturer of the pressing
tools, insofar the pressing machines and pressing jaws and/or slings fulfil the
following standards:

- The pressing tools must be maintained and used according to the respecti-

ve manufacturer’s guidelines.

- Compact pressing machines up to including 28 mm must exhibit a minimum

pressing force of 19 kN and a bolt diameter of 10 mm.

- Pressing machines up to including 54 mm and up to including 108 mm

(electronically controlled) must exhibit a minimum pressing force of 30 kN

and a bolt diameter of 14 mm.

- For multilayer pipe connections up to including 54 mm in diameter, the pres-

sing jaws and slings for press joints of type M-MM must have the original
SA, M or V profiles.

- For multilayer pipe connections larger than 54 mm in diameter, the pressing

jaws and pressing slings for press joints of type M-MM must have the origi-
nal SA or M profiles.

- For multilayer pipe connections, the pressing jaws and slings must have the

original TH profile.

assembly instructions for the implemented system must be ob-

served at all times.

1.7. Appropriate and recommended pressing tools

Short overview of the

3fit

-Push

system consisting of

MultiFit

Flex

system pipe and the

3fit

-Push

system pipe fitting of copper alloys

1.6.

3fit

Push

system

d = 16 – 20 mm
PN 10 (at 70 °C)

– Drinking water
– Heating
– Cooling water
– Compressed air (oil free)

No pressing tool required due
to push fitting system

3fit

-Push

EPDM

Colour: black
Max. cont. temp.:
-30 °C to 70 °C
(shortly up to 95 °C)

Materials:

Fittings:

Pipes:

Material no: CC499K (CuSn5Zn5Pb2-C) according to EN 1282

Multilayer pipe according to DIN 16833 – 34 consisting of:
Material of the inliner: PE-RT
Stabilising pipe: Aluminium section
Material of the outer casting: PE-HD

Field of application

Dimension/Nominal pressure

Gasket

Tool

Short overview of the

3fit

-Press

system consisting of

MultiFit

Flex

system pipe and the

3fit

-Press

system pipe fitting of copper alloys

1.5.

3fit

Press

system

d = 16 – 63 mm
PN 10 (at 70 °C)

– Drinking water
– Heating
– Cooling water
– Compressed air (oil free)

d = 16 mm – 63 mm
free selection of pressing tools
with TH-pressing profile

(see chapter 1.7)

3fit

-Press

EPDM

Colour: black
Max. cont. temp.:
-30 °C to 70 °C
(shortly up to 95 °C)

Materials:

Fittings:

Pipes:

Material no: CW 602N (CuZn36Pb2As) according to EN 12164

Multilayer pipe according to DIN 16833 – 34 consisting of:
Material of the inliner: PE-RT
Stabilising pipe: Aluminium section
Material of the outer casting: PE-HD

Field of application

Dimension/Nominal pressure

Gasket

Tool

Technical pages

VI.5

avoid a sensitization of the material. If, contrary to expectations, annealing co-
lors should arise, these must be eliminated on the inside and outside surface
of the stainless steel pipes. Experience indicates that even a straw-yellow dis-
coloration of the stainless steel can lead to a sensitization of the material. Par-
ticularly suitable for the cutting of pipes of stainless steel or copper is the pla-
netary saw RA 21 +GF+, with which the outside cut edges are also deburred
simultaneously with the cutting.
The utilization of cutting disks (flexible) or even flame cutter is not permissi-
ble for the shortening of stainless steel pipes.

Caution:

After shortening, the pipe ends are to be carefully deburred inside and outside.

2.4. Sealing materials and sealing auxiliary
materials

Sealing materials and sealing auxiliary materials may not give off chloride ions
in case of utilization of stainless steel pipes and fittings. With the employment
of copper pipes and fittings, no ammonium ions may be released.
In drinking water installations, compressed air installations etc. (however not in
gas installations according to TRGI and according to TRF), it is recommended to
employ a permanently elastic screw thread caulking material instead of the ti-
me-consuming hemp-insertion.

2.5. Electrical trace heating

Shut off lines which do not possess their own safety systems must not be hea-
ted, in order to avoid inadmissible increases of pressure in these areas. In con-
nection with electrical trace heating, it is absolutely necessary that EN 1717 and
the state of the art of the technology be observed.

In case of stainless steel lines which are equipped with electrical trace hea-
ting, it is to be ensured that the pipe inside-wall temperature does not ex-
ceed 60°C for a long period.

Short-term temperature exceedings of approx. 70°C are permissible for the pur-
pose of thermal disinfection. In case of copper lines, there are no temperature
restrictions in connection with electrical trace heating, provided that inadmissi-
ble increase of pressure is avoided.

2.6. Electrical protective measures

Equipotential bonding is to be carried for all electrically conducting pipes. Stain-
less steel and copper pipes form, with their corresponding fittings (also using
press fittings), a continuous electrically conducting connection and the equipo-
tential bonding must be included.
The installer of the electric systems is responsible for the implementation of the
electrical protective measures.

2.7. Z-dimension method and fitting
combinations

he z-dimension method is a prefabrication method which is described more

detailed in the

specialist manual.

These z-dimensions of the

products can be found on the Internet

under: www.sanha.com/catalog/index.html, the tables of the associated

2. Processing directives

2.1. Storage and transport of pipes
and fittings

In case of storage and transport of pipes and fittings, damage and contamina-
tion through e.g. mortar, soil, sludge, rain or dirt water must be avoided.
It is recommended to transport and to store the pipes in a suitable manner.
They are to be laid effectively on squared timbers on the loading space of the
truck, both during the transport as well as in case of storage. In this way it is
assured that the pipes and fittings are stored dry and not placed directly on
the ground. Fittings are to be taken from the original packing only directly prior
to installation.

2.2. Bending of stainless steel, carbon steel and
copper pipes

The hot bending of stainless steel pipes is not allowed. Copper pipes in drin-
king water installations up to dimension 28 mm (inclusive) may not be hot
bent.

SANHA NiroSan

system pipes up to dimension 28 mm and copper

pipes according to EN 1057 must be cold bent with suitable bending tools up
to dimension 18 mm.
The system pipe

NiroTherm

and the

SANHA Therm

system pi-

pe can be cold bent up to dimension 28 mm. In this case, a bending radius,
measured in the neutral axis of the bend, of at least R = 3.5x d for

system pipe of stainless steel and unalloyed steel and for copper of at least
R = 3x d, is to be kept.
It is to be ensured that, after the bending, a sufficiently long cylindrical pipe
piece is available for further processing. In case of items larger than the abo-
ve-mentioned dimensions, the manufacturer of the bending device is respon-
sible for a successful bending result.

2.3. Cutting of stainless steel, carbon steel and
copper pipe

The cutting of stainless steel, carbon steel and copper pipes is implemented
preferably with a fine-toothed metal saw or a pipe cutter. If electrically driven
saws are employed for the cutting of stainless steel pipes, the cutting speed
may be only so high that no annealing colors arise at the interface, in order to

Technical pages

VI.6

The following applies:

L = M – (z1 + z2)

If a certain misalignment "a" is required (as in case of an off-set bend) (see
Illustration 2.5) and 45° bends should be employed for that to avoid unneces-
sary pressure losses, the measure

>M<

is to be calculated thus.

The following applies:

sin

––

sin

45°

= 0,7071

M =

––––––

0,7071

Some of the most important fitting combinations used in practice for the ap-
plication are listed in the following tables.

2.8. Fire protection

The fire protection is to be implemented according to the respective national
regulatory works and/or specifications.

2.9. Acoustic insulation

The acoustic insulation is to be implemented according to the respective na-
tional regulatory works and/or specifications.
Pipes including fittings itsself generate no noise.
But armatures that are poorly constructed or poor dimensioned can generate
flow noise that will be transmitted on the pipework.
Pipes should always be acoustically insulated against structure-borne noise
in wall break-through penetrations, or on installation walls (clamps with
acoustic insulation liner,

Catalog No. 9918) or should be laid in uti-

lity shafts.

2.10. Thermal insulation

Thermal insulation of pipes is appropriate for reasons of cost-effectiveness
and environmental protection (decrease of CO

emissions). This is stipulated

in the respective nationally applicable regulatory works.
Pipelines for cold drinking water are to be laid so that the drinking water qua-
lity is not impaired by the heat influence of the environment. A sufficient se-
paration distance to heat sources is to be maintained (hot water and heating
lines, chimneys etc.), so that the lines are not influenced by these heat sour-
ces. If this is not possible, the cold water lines must be insulated against in-
admissible heating.

product overview (please request separately). In case of applica-

tion of the z-dimension method, both planners, as well as fitters, by all means
must request the valid z-dimension from the parts’ manufacturer.
The

>center-to-center<

measurement method (Illustration 2.1) is the ba-

sis of the z-dimension installation. The measurement of pipe axis to pipe axis
allows the precise stipulation of the corresponding pipe lengths with the
knowledge of the z-dimension.

The z-dimension

>z<

in case of socket-coupling special fittings results as a

difference from the structural length

>a<

minus the socket insertion depth

>e<

. The nozzle dimension is always the structural length of the special fit-

ting (see Illustration 2.2 - 2.3).
The following applies:

z = a – e

The pipe length >L< is determined from the center-to-center measurement

>M<

minus the z-dimension >z< of the fittings involved (Illustration 2.2 -

2.3).

Illus.2.2: Socket-coupling
special fitting

Illus. 2.3: Nozzle special fitting

Illus. 2.4: Socket-coupling
nozzle special fitting

Illus. 2.5: Determination of the
pipe length

Illus 2.6: Calculation of off-set
bends

Illus. 2.1: Measurement method in
case of the z-dimension method

Technical pages

VI.7

In case of operating conditions usual in residential buildings, sufficient insu-
lation thickness is to be selected in such cases (see above table). In case of
stagnated flow of the drinking water, thermal insulation also cannot offer any
permanent protection against heating. The specifications in the table can al-
so be employed for protection against water condensate on the insulation
material surface, with assumption of a drinking water temperature of 10°C.

Protection against water condensate is not necessary if the pipe has a suit-
able jacket covering (e.g.

WICU

pipe).

Standard values according to EnEV for

NiroSan

NiroTherm

SANHA Therm

system pipes and copper pipes can be taken from the

following table.

Installation location

Insulation layer thickness

with a thermal conductivity of

= 0,04 W m

-1

-1 *)

Pipe work single laid in not heated rooms

4 mm

Pipe work single laid in heated rooms

9 mm

Pipe work in a duct, without warm pipes

4 mm

Pipe work in a duct, beside warm pipes

13 mm

Pipe work in a wall slot, riser pipes

4 mm

Pipe work in wall cut-outs, beside warm pipes

13 mm

Pipe word on the concrete floor

4 mm

*) For other thermal ciondivities the insulation thickness must be converted, based on a diameter of d = 20 mm.

Standard values for the minimum insulation layer thickness for the insulation of tubes for drinking water cold according
to DIN 1988-2, scale 9

In refrigeration systems

cooling water pipes

are frequently operated with

temperatures from 4°C to 6°C. To decrease the energy losses and for avoi-
dance of water condensate (undershooting of the dew-point temperature of

the ambient air), these lines must be water-blocking thermally-insulated.
These requirements apply not only for newly built systems, but also for those
laid during renovation in existing buildings.

*) Measurements refer to a ROCKWOOL insulation jacket RS 800 und RS 835, by usage of insulation materials of other producers (Missel, Armaflex etc.)

the diameters must be verified by the producer informations

Tube outside diameter

Insulation thickness

Total outside diameter

100 %

[mm]

= 0,035 W m-11 K-1

[mm]

12/15/18/22

20 mm

52/55/58/62

28/35

30 mm

88/95

42/54/76,1/88,9/108

same as DN

122/154/216/249/308

Tube outside diameter

Insulation thickness

Total outside diameter

100 %

[mm]

= 0,04 W m

-1

1 K

-1

[mm]

12/15/18/22

26 mm

64/67/70/74

28/35

38 mm

104/111

Insulation thickness for

NiroSan

‚

NiroTherm

‚

Therm

System pipes

Technical pages

VI.8

2.12. Thermally caused changes in length
of pipes

Heat transition pipes and lines which are exposed to a high level of heat radia-
tion (e.g. solar radiation etc.), expand differently according to material.
If the lines are hindered in case of this thermally caused change in length, then
damage can arise (mostly in the form of fatigue failures). In order to avoid this,
sufficient space for expansion must be allowed for the pipe.
To achieve this, the elasticity of the pipe network can frequently be exploited.
For this it is necessary to obtain sufficiently easily bent line sections in the area
of line by-passes through correct arrangement of the pipe brackets.

The basic principle is that sufficient expansion possibility must always be avai-
lable between two fixed points.

Provided that the natural line routing does not enable sufficient compensation
of the thermal expansion, this must be realised through the installation of spe-
cial component parts, such as e.g. metal bellows compensators (

Catalog No. 9872, see Illustration 2.6). If sufficient space is available, a U-pipe
compensator can also be employed, as indicated in Illustration 2.11.

In case of concealed installation, the unobstructed thermal expansion is to be
ensured such that the lines are coated with elastic material of sufficient thick-
ness. In particular, ceiling penetrations are to be cushioned carefully - provided
that a fixed point has not been intentionally placed there (see Illustrations 2.8 -
2.10).

Pipes are to be connected directly to building by means of standard clamps
and must not be attached to other lines. In order to fulfill the acoustic protecti-
on requirements, clamps with rubber inserts are to be employed (

Catalog No. 9918). The maximum clamp separations are stipulated for the dif-
ferent applications in the respective regulatory works. If no specifications are

available in this connection, these can be taken from the above table. Clamps
are always to be attached on the pipe only, not on the fittings. With the arran-
gement of pipe fastening - in particular in the area of pipe by-passes and bran-
ches (bends, T-joints etc.) - the references of the Chapter "Thermally caused
change in length of pipes" are to be considered.

Illustration 2.7: Axial compensator with

NiroSan

press

sockets (

Catalog No. 9872)

2.11. Pipe Mountings

Mounting distances for pipes with

products

NiroSan

NiroTherm

Therm

system pipes

and copper pipes

Pipe outer dimension

[mm]

Mounting distance

[m]

Pipe outer dimension

[mm]

Mounting distance

[m]

64 / 66,7

76,1

88,9

108

1,25

1,50

2,00

2,25

2,75

3,00

3,50

4,00

4,25

4,75

5,00

1,00

1,50

2,00

2,25

2,50

2,75

MultiFit

Flex

system pipes

Technical pages

VI.9

Illustration 2.8:
Pipes under
plaster

Illustration 2.9:
Pipes under
composition
floor (in thermal
and footfall
acoustic insula-
tion)

Illustration
2.10: Pipes
in ceiling
penetrations

Thermal expansion “

l“ of

NiroSan

NiroTherm

‚ system pipes and copper pipes

Thermal expansion “

l” of high-grade steel and copper [mm]

l [m]

t [K]

1
2
3
4
5
6
7
8
9

0,17
0,33
0,50
0,66
0,83
1,00
1,16
1,33
1,49
1,66

0,33
0,66
0,99
1,32
1,65
1,98
2,31
2,64
2,97
3,30

0,50
0,99
1,49
1,98
2,48
2,97
3,47
3,96
4,46
4,95

0,66
1,32
1,98
2,64
3,30
3,96
4,62
5,28
5,94
6,60

0,83
1,65
2,48
3,30
4,13
4,95
5,78
6,60
7,43
8,25

0,99
1,98
2,97
3,96
4,95
5,94
6,93
7,92
8,91
9,90

1,16

2,31
3,47
4,62
5,72
6,93
8,09
9,24

10,40
11,55

2.12 Thermal caused change of lenght of pipes

Thermal expansion “

l“ of

Therm

system pipes

Thermal expansion “

l” of C-steel [mm]

l [m]

t [K]

1
2
3
4
5
6
7
8
9

0,12
0,24
0,36
0,48
0,60
0,72
0,84
0,96
1,08
1,20

0,24
0,48
0,72
0,96
1,20
1,44
1,68
1,92
2,16
2,40

0,36
0,72
1,08
1,44
1,80
2,16
2,56
2,88
3,24
3,60

0,48
0,96
1,44
1,92
2,40
2,88
3,36
3,84
4,32
4,80

0,60
1,20
1,80
2,40
3,00
3,60
4,20
4,80
5,40
6,00

0,72
1,44
2,16
2,88
3,60
4,32
5,04
5,76
6,48
7,20

0,84
1,68
2,52
3,36
4,20
5,04
5,88
6,72
7,56
8,40

Thermal expansion “

l“ of

MultiFit

Flex

system pipes

Thermal expansion “

l” of multilayer pipe

l [m]

t [K]

1
2
3
4
5
6
7
8
9

0,23
0,46
0,69
0,92
1,15
1,38
1,61
1,84
2,07
2,30

0,46
0,92
1,38
1,84
2,30
2,76
3,22
3,68
4,14
4,60

0,69
1,38
2,07
2,76
3,45
4,14
4,83
5,52
6,21
6,90

0,92
1,84
2,76
3,68
4,60
5,52
6,44
7,36
8,28
9,20

1,15
2,30
3,45
4,60
5,75
6,90
8,05
9,20

10,35
11,50

1,38
2,76
4,14
5,52
6,90
8,28
9,66

11,04
12,42
13,80

1,61
3,22
4,83
6,44
8,05
9,66

11,27
12,88
14,49
16,10

Technical pages

VI.10

Illustration 2.11:
Minimum separation
distance "X" of the clamps
to the shaped pieces with
heating pipes
(see Table A 3.3 and A 3.4)

Illustration 2.12:
Necessary length of leg "L" of
the double U-bend, as expansion
compensating element, to take
up the thermal expansion
(see Table A 3.5 and A 3.6)

Minimum distance “X” of the clamps to the fittings in dependence to the lenght change of high temperature pipes (see image 2.11)

Necessary side length “X” of the

NiroSan

NiroTherm

Therm

press systems

d [mm]

l [mm]

15
18
22
28
35
42
54

76,1
88,9
108

0,57
0,62
0,69
0,77
0,87
0,95
1,08
1,28
1,38
1,52

0,80
0,88
0,97
1,10
1,22
1,35
1,52
1,81
1,95
2,15

0,98
1,08
1,19
1,34
1,50
1,64
1,86
2,21
2,39
2,63

1,13
1,24
1,37
1,55
1,73
1,90
2,15
2,55
2,76
3,04

1,27
1,39
1,54
1,73
1,94
2,12
2,41
2,86
3,09
3,40

1,39
1,52
1,68
1,90
2,12
2,32
2,63
3,13
3,38
3,73

1,50
1,64
1,82
2,05
2,29
2,51
2,85
3,38
3,65
4,02

Necessary side length “X” for copper pipes with

press fittings of copper and copper alloys [m]

d [mm]

l [mm]

12
14
15
16
18
22
28
35
42
54
64

66,7
76,1
88,9
108

0,67
0,72
0,75
0,77
0,82
0,90
1,02
1,14
1,25
1,42
1,54
1,57
1,68
1,82
2,00

0,94
1,02
1,06
1,09
1,16
1,28
1,44
1,61
1,77
2,00
2,18
2,23
2,38
2,57
2,83

1,16
1,25
1,29
1,34
1,42
1,57
1,77
1,98
2,16
2,45
2,67
2,73
2,91
3,15
3,47

1,34
1,44
1,49
1,54
1,64
1,81
2,04
2,28
2,50
2,83
3,08
3,15
3,36
3,64
4,01

1,49
1,61
1,67
1,72
1,83
2,02
2,28
2,55
2,79
3,17
3,45
3,52
3,76
4,06
4,48

1,64
1,77
1,83
1,89
2,00
2,21
2,50
2,79
3,06
3,47
3,78
3,86
4,12
4,45
4,91

1,77
1,91
1,98
2,04
2,16
2,39
2,70
3,02
3,31
3,75
4,08
4,17
4,45
4,81
5,30

Technical pages

VI.11

Necessary side length “L” of the U-bend expansion joint for thermal expansion absorption (see image 2.12)

Necessary side length “L” of the

NiroSan

NiroTherm

Therm

press systems [m]

d [mm]

l [mm]

15
18
22
28
35
42
54

76,1
88,9
108

0,33
0,36
0,40
0,45
0,50
0,55
0,62
0,74
0,80
0,88

0,46
0,51
0,56
0,63
0,71
0,77
0,88
1,04
1,13
1,24

0,57
0,62
0,69
0,77
0,87
0,95
1,08
1,28
1,38
1,52

0,65
0,72
0,79
0,89
1,00
1,10
1,24
1,47
1,59
1,76

0,73
0,80
0,89
1,00
1,12
1,22
1,39
1,65
1,78
1,96

0,80
0,88
0,97
1,10
1,22
1,34
1,52
1,81
1,95
2,15

0,87
0,95
1,05
1,18
1,32
1,45
1,64
1,95
2,11
2,32

Necessary side length “L” for copper pipes with

press fittings of copper and copper alloys [m]

d [mm]

l [mm]

12
14
15
16
18
22
28
35
42
54
64

66,7
76,1
88,9
108

0,39
0,42
0,43
0,45
0,47
0,52
0,59
0,66
0,72
0,82
0,89
0,91
0,97
1,05
1,16

0,55
0,59
0,61
0,63
0,67
0,74
0,83
0,93
1,02
1,16
1,26
1,29
1,37
1,48
1,64

0,67
0,72
0,75
0,77
0,82
0,90
1,02
1,14
1,25
1,42
1,54
1,57
1,68
1,82
2,00

0,77
0,83
0,86
0,89
0,94
1,04
1,18
1,32
1,44
1,64
1,78
1,82
1,94
2,10
2,31

0,86
0,93
0,96
1,00
1,06
1,17
1,32
1,47
1,61
1,83
1,99
2,03
2,17
2,35
2,59

0,94
1,02
1,06
1,09
1,16
1,28
1,44
1,61
1,77
2,00
2,18
2,23
2,38
2,57
2,83

1,02
1,10
1,14
1,18
1,25
1,38
1,56
1,74
1,91
2,16
2,36
2,40
2,57
2,78
3,06

Technical pages

VI.12

2.14. Pressure test

Heating
installations

Drinking water
installations
DIN 1988 (D)

Designation

Test conditions with

Water

Inert gas

Preliminary test
(applies also for non-pressed,
non-sealed press fittings)

Final test

test

= 1 bar with

test

10 min

(with moderate flow velocity)

test

= 1 bar

with
t

test

10 min

(with moderate flow velocity)

test

= p

allowed

x 1,5 with

< 10 k of 10 min

and

10 k of

test

10 min

test

= p

allowed

x 1,3

with

< 10 k of

test

10 min

test

= 110 mbar

with
V

pipe

100 l of

test

30 min (for every further 100 l,

increase t

test

10 min in each case)

test

= 110 mbar

with
V

pipe

100 l of

test

30 min (for every further 100 l,

increase t

prüf

10 min in each case)

test

= 3 bar (up to DN 50)

and
p

test

= 1 bar

(greater than DN 50)
with
V

pipe

100 l of

test

30 min (for every further 100 l,

increase t

test

10 min in each case)

test

= p

allowed

x 1,3

or
p

test,max.

= 3 bar

from t

test

30 min

The times for the equalization of temperature are not included in the minimum
test times indicated in the above table and these minimum test times thus have
to be added. Measuring devices which enable a sufficient accuracy of reading

are to be employed for the pressure test. According to the areas of application,
the implementation regulations for the pressure test described in the respective
national regulatory works and standards are to be considered.

2.15. Flushing

Drinking water lines are to be flushed thoroughly with filtered drinking water im-
mediately after the pressure test, independent of the type of material employ-
ed. The cold and hot water lines are to be flushed separately with an air-water
mixture, intermittently under pressure. The flushing with drinking water is to be
implemented so that a minimum flow velocity of 0.5 m/s is achieved in the lar-

gest pipe to be flushed. A minimum number of extraction points must be ope-
ned for this purpose (see the following tables).
The process for line flushing is to be coordinated beforehand with the builder
and carried out and recorded in the presence of the builder and/or one of his
agents.
Basically, the respective national regulatory works are to be considered in the
flushing of drinking water lines.

Largest dimension of the distribution line

Nominal diameter DN

100

Outside diameter [mm]

76,1

88,9

108

100

151

236

Minimum number of the extraction points to be opened for the flushing system, with a minimum flow velocity of 0.5 m/s

Minimum volume flow at full filling
of the distribution line [l/min]

Minimum number of extraction
points DN 15 to be opened

Technical pages

VI.13

Largest dimension of the distribution line

Nominal diameter DN

100

Outside diameter [mm]

76,1

88,9

108

Minimum number of extraction
points DN 15 to be opened

2.16. Disinfection

Disinfection of drinking water pipes

Drinking water installations are to be flushed thoroughly with filtered drinking
water before operational startup, to establish hygienically trouble-free condi-
tions.
If a disinfection of drinking water pipes is necessary, the respective national
regulatory works and/or specifications are to be considered.
An intensive flushing with clear drinking water must be carried out directly af-
ter the disinfection. No remains of disinfection agents may be measured in the
drinking water at the tappings and respectively the tapping measure values
may not be higher than the values at the hand over point (house service con-
nection). It is essential for the success of the flushing that the flow rate in each
pipe section is high enough. Intermitted flushing is recommended the mixtu-
re of air and water. After the flushing cycle the pipe work must be exhausted
from air.
The implementation of a thermal disinfection of the drinking water lines with
hot water, at a temperature between 70°C and 95°C, and a disinfection time
of approx. 1 hour in every line section, is sufficient in most cases.
The thermal disinfection of stainless steel and copper lines can be implemen-
ted with considerably higher temperatures. The temperature is limited to
120°C in case of press fittings because of the elastomer. However, there is no
restriction on the disinfection duration.

Disinfection of drinking water

The disinfection of drinking water is to be implemented according to the re-
spective national regulatory work and/or specifications

2.17. Inner corrosion protection in open systems

Stainless steel

Stainless steel forms a passive layer (chromic oxide layer for the most part)
on contact with oxygen and/or oxygenated water (e.g. drinking water). This
passive layer prevents any reaction between the material and the water and
its material contents. In this way, the water is not influenced in any manner by
the pipe material.
Since stainless CrNiMo steels do not add any materials to the drinking wa-
ter due to the passive layer formed, they can be connected with all other
materials authorized for drinking water installation, without compliance
with a flow-direction regulation, i.e. in arbitrary precedence. For this rea-
son, the

NiroSan

press system is also particularly suitable for partial

clean-ups of existing drinking water installations - independent of their pi-
pe materials.

However, stainless steel and carbon steel must not be connected directly with
each other. Rather a bracket is to be installed of non-ferrous heavy metal,
through which the separation distance between the component part of car-
bon steel and the component part of stainless steel corresponds to the pipe
outside diameter at least (see Illustration 6.110). This is achieved e.g. through
the installation of a non-ferrous metal valve (brass or red brass) between the
stainless steel and carbon steel materials.
In case of the installation of stainless steel with copper materials, experience
indicates that a minimum relationship of the water-contacting surfaces bet-
ween copper materials (copper and brass and red brass together) and stain-
less steel should not be fallen below considerably.
A sensitization of the stainless steel is possible through oxide layers, anne-
aling colours, incorrect heat treatment (e.g. during the welding, separation

Minimum quantity of the tapping points to be opened for the flushing acc. to ZVSHK-leaflet with a flush duration of 5 minutes at the
last opened tapping point

Illustration 2.20:
Permissible con-
nection between
stainless steel
and carbon steel

with fast-running saws or with cutting disks) of the component parts, and must
be securely avoided. The hot bending of the pipes is not permissible.

In case of an impact chlorination for the disinfection of a pipe, the national
standards and regulatory works are to be considered, since strong oxidizing
agents, as they are used in this case, can damage the passive layer in case of
non-professional application.

Copper

Direct connection of copper with carbon steel is possible, subject to observa-
tion of the flow regulation which states that copper is always to be arranged
downstream of component parts of carbon steel, seen in the direction of flow
of the water. Otherwise the carbon steel would be prone to hole-corrosion
through the precipitation of copper ions on the surface of the carbon steel
pipes.
The assembling of stainless steel and copper is possible for stainless steel as
described above.

copper

Stainless Steel

冢

冣

min

= 0,02

Carbon
steel

Bronze or brass

Technical pages

VI.14

2.18 Inner corrosion protection in closed systems

In closed systems which are operated with water which is approximately
oxygen-free, such as e.g. heating plant, solar energy plants etc., no corro-
sion processes can take place on metal pipe materials. For this reason, all
usual pipe materials, as well as unalloyed steel, can be employed in heating
plants. The combination of the different metal pipe materials (copper, unal-
loyed steel, stainless steel etc.) is possible in arbitrary precedence without
restrictions. However, in closed systems no oxygen must then penetrate.
Zinc can erode with higher pH-values - as they generally occur in heating
plants - also with absence of oxygen and with hydrogen formation. This leads
to the separation of the zinc layer in case of carbon steel pipes, however not
to damage to the pipe, since the unalloyed steel is not attacked. However, the
hydrogen formation generally leads to plant malfunctions (gas cushion forma-
tion). For this reason galvanized ferrous materials are to be dispensed with in
heating plants.

2.19. External corrosion protection

In some in the following cases, which are described in detail, suitable coatings
(subsequently applied protective paint coats) are permissible. However, it is to
be considered that e.g. in the area of the pipe fixing and/or pipe passages, a
continuously trouble-free surface paint coating can be achieved in rare cases
only. Improperly protected spots are generally exposed to a concentrated cor-
rosion attack. Subsequent paint coating of already installed pipes is thus not
to be recommended.

Underground Pipes

Basically, pipes and pipe connectors and valves laid underground must be pro-
tected against mechanical action (e.g. through laying in a protective conduit).
Metal pipes additionally require protection against external corrosion attacks.
For

stainless steel

and

copper pipelines

, anti-corrosive tape and he-

at-shrinkable sleeves, in accordance with DIN 30672, Class A (non-corrosive
ground), Class B (corrosive ground), can be employed as subsequent external
corrosion protection. Copper pipes coated by the manufacturer can also be
employed in case of copper pipes, provided that the requirements on DIN
30672, Class B (except for the peeling resistance) (e.g. WICU pipe), are satis-
fied. In every case, the fittings are to be provided with anti-corrosive tapes or
heat-shrinkable sleeves.
The pipes of unalloyed steel are to be provided with a subsequent external
corrosion protection in accordance with DIN 30672 of the Contamination
Class C.

Below the pavement

, pipes laid (not in the pavement, but within the ther-

mal and footfall acoustic insulation and/or in recesses in the unfinished cei-
ling) are to be protected as described above for underground pipes.

Exterior installed pipe work

Basically, metal pipes and pipe connectors and, where appropriate, valves laid
in the open must be protected against mechanical action and (provided the
danger exists) against the admission of halogens (fluorine, chlorine, bromide
and iodine).

Stainless steel pipelines

do not require any additional corrosion protecti-

on.

Copper pipes

generally do not require any additional corrosion protection,

except where gas conduits according to TRGI are involved. In this case, the li-
ne is to be protected as described above for underground pipes.

Pipes of unalloyed steel

are to be protected against corrosive dama-

ges as described in the section "Underground pipes". Alternatively suitable
corrosion coatings and/or zinc coatings can be employed. The hot-dip gal-

vanizing can be used in this case on the exterior surface which, depending
on the type of atmosphere, represents a long-term corrosion protection. As
equivalent corrosion protection with respect to the hot-dip galvanizing, the
galvanized pipe surface with a coating thickness of 7 - 15 mm can be con-
sidered.

Pipes laid concealed
Stainless steel pipelines

do not require any additional corrosion protecti-

on, provided that the surrounding materials do not include any chloride-con-
tent additives (e.g. frost protection additive). In the latter case, direct contact
of the material with the pipe material must be avoided through suitable coa-
tings or jacketing.

Copper pipes

do not require any additional corrosion protection, provi-

ded that the surrounding materials do not include any ammonium-content
additives (e.g. retarding admixtures). In the latter case, direct contact of the
material with the pipe material must be avoided through suitable coatings
or jacketing.

Galvanized steel pipes do not

require in general any additional cor-

rosion protection, except where action from moisture is expected over a lon-
ger period or additives are employed in the covering material that can cau-
se corrosion processes at the galvanized steel. In these cases, an additio-
nal corrosion protection is to be implemented as described in the Section
"Underground pipe".

Surface-mounting laid pipes
Stainless steel pipelines

do not require any additional corrosion protecti-

on, except in chlorine-content atmospheres (e.g. swimming pool). In the lat-
ter case the pipes must be provided with suitable coatings or jacketing.

Copper pipes

generally do not require any additional corrosion protection,

except for ammonia, (pipes laid in animal stables) or bivalent sulfur (e.g. hy-
drogen sulfide of biogases) existing in the room air. This applies also for lines
in rooms of the meat processing industry (also e.g. cold shelf), since animal
protein can convert into sulfidic products. In these cases, the lines are to be
protected as described above for underground pipes.

Galvanized steel pipes do not

require in general any additional cor-

rosion protection, except where action from moisture is expected over a lon-
ger period or additives are employed in the covering material that can cau-
se corrosion processes at the galvanized steel. In these cases, an additional
corrosion protection is to be implemented as described in the Section "Un-
derground pipe".

Suitable insulation materials

Thermal insulation is to be kept permanently dry in order to retain the thermal
insulation effect. For this reason, they are always to be implemented water-
blocking. In this connection, closed-cell insulation materials are especially to
be recommended.
Insulation materials for

stainless steel pipelines

must not exceed a

mass content of 0.05% of water-soluble chloride ions. Insulation materials in
AS quality (AS = Austenitic Steels), fall significantly below this mass content
and are therefore particularly suited for stainless steel.
Insulation materials for

copper pipes

must be nitrite-free and must not ex-

ceed a mass content of 0.02% ammonia.

2.20. Manufacture of the press connections

The procedure for the manufacture of a press connection is indicated below
in the example of the

press fittings of copper, in association with

copper pipes approved by

(see table in the Chapter "Approved to

header pipes").

Technical pages

VI.15

For the press system

NiroSan

NiroTherm

and the connecting of

the

NiroTherm

and

SANHA Therm

system pipe with the

SANHA Therm

press fittings, the same procedure applies.

The pipe ends must be clean for the manufacture of trouble-free press con-
nections. The pipe exterior surfaces may indicate no scratches or grooves over

a length which corresponds to the inserted length at least. In case of dismant-
ling of works-coated plastic pipes, it is to be particularly ensured that the pi-
pe surface is not damaged in this area. Through visually identifiable, in part
only scarcely identifiable, incisions with the fitting knife, such damage can ea-
sily arise.

3. Mark the inser-
tion depth on the
pipe with felt-tip-
ped pen and tem-
plate (

Catalog No. 4980

for the

SANHA Therm

and

press fittings of cop-

per and copper alloys [green color] -

Catalog No.

4981 for

NiroSan

and

NiroTherm

pressing system of

stainless steel [black color]). The marker must be water-proof.
Check

press fittings for correct seating of the ring

gasket and insert pipes into the fittings coupling up to the stop,
using slight rotation. The fitting outer edge must line up with
the marker.

1. Cut off pipes

with fine-toot-
hed hacksaw in
right-angled
form

4. Select press jaw

according to the
fitting dimension
and employ in
the press
machine. Close
the retention
bolts of the
machine.

Alternative:
Separate pipes
with a pipe cutter.

5. Check whether

fitting outer edge
lines up with the
marker. Open
press jaw and
place at right an-
gles on to the

press

fitting unit such
that the bead of
the fittings in-
serts into the slot
of the press jaw.

6. Release pressing procedure through

actuating the start key. In case of com-
patible machines, the pressing proce-
dure cannot be interrupted premature-
ly. In this way, it is ensured that a tight,
permanently sealed form and longitudi-
nal force-closed connection always re-
sults. In case of danger, an interruption
of the pressing procedure is possible
through actuation of the Emergency
Off button

After reset of the Emergency Off situation, a

post-pressing or, where appropriate, a new

pressing must be implemented

2. Deburr pipes

carefully inside
and outside

Dimension to d = 54 mm

6. Open the intermediate jaw by depressing the jaw levers and

attach to the press sling so that the claws of the intermediate
jaw grip around the pins of the press sling. Check whether
fittings outer edge lines up with the marker of the insertion
depth - release pressing procedure through actuating the
start key. The pressing procedure cannot be interrupted pre-
maturely. In this way, it is ensured that a permanently sealed
connection always results. An interruption of the pressing
procedure in the case of danger is possible through pressing
the Emergency Off button

After reset of the Emergency Off situation, a post-pressing or, where

appropriate, a new pressing must be implemented

Technical pages

VI.16

4. Select the appropriate press sling. En-

sure that the marker strokes form a line
on the slide segments and the clamps. If
this is not the case, make the slide seg-
ments movable. Then place the press
sling around the

press fitting

such that the bead of the fitting is inser-
ted into the slot of the press sling. Close
press sling. Shift lock strap into locking
pins. Note that the press sling fits close-
ly on the fittings. Then rotate the press
sling into position, so that the press can
be applied properly.

5. Select appropriate intermediate jaw for

the dimension: In case of electronic
pressing tools for the dimensions 42
mm and 54 mm, insert the intermediate
jaw ZB 302 (

Catalog No.

6931.1) - and for conventional press
tools, the intermediate jaw ZB 202
(

Catalog No. 6930), into the

press tool and close the retention
bolts.

7. Loosen the press sling through strip-

ping the lock strap. In this case, locking
pins protrude from the opposite side.

In case of

the dimensions 42 mm and 54 mm, press slings are

preferably employed

because of the easier handling. The installation is

implemented first of all as described above for the steps 1 to 3, Section "Di-
mension to 54 mm". Then the procedure is continued with the dimensions 42
mm and 54 mm with the operation steps 4. to 7.

Sanha. Produktkatalog (2009-2010) - page 1