Installation
Valve with Welding Ends
30
Valve with Welding Ends
This section describes the welding procedure for the valve.
Installation position of the valve housing
WARNING
Spring tension in the valve
Danger of injury when opening the clamps (43) as the released spring pretension will
suddenly lift the actuator.
Therefore, release the spring tension before detaching the clamps by pressurizing
the actuator of a spring-closing valve with compressed air at max. 8 bar.
IMPORTANT NOTE
The installation position of the housing is not any!
In case of incorrect installation position, the valve is not working properly.
Make sure that the housing has the correct orientation (TOP
↑
), see pict.
Carry out the following steps:
1.
Release the spring tension.
2.
Disassemble the valve, see chapter “Disassembling“ (Page 51).
3.
Fit the housing without sealing rings.
4.
Fit the housing into place and tack it.
5.
Always close the housing before welding.
6.
Flush the housing with forming gas from the inside to push the oxygen out of the
system.
7.
Weld the housing stress-free into the pipe system; use welding filler if necessary.
Use the TIG welding with pulse method.
8.
Passivate the seam after welding.
9.
Fit the seals.
Operating Instructions · VARIVENT
®
Mixproof Valve M-C/2.0
Edition 2018-10-04
Содержание VARIVENT 24/7 PMO
Страница 69: ...Maintenance 69 Assembling 2 Hold carrier sleeve at Z using a hook spanner...
Страница 81: ...1 Spare parts list double seat valve M C 2 0 Fig 1 Spare parts list double seat valve M C 2 0 04 10 2018 81...
Страница 85: ...1 Spare parts list Switch bar T VIS A 15 Fig 1 Spare parts list Switch bar T VIS A 15 04 10 2018 85...
Страница 87: ...1 Spare parts list Switch bar T VIS M 15 Fig 1 Spare parts list Switch bar T VIS M 15 04 10 2018 87...
Страница 89: ...1 Dimension sheet double seat valve M C 2 0 Fig 1 Dimension sheet double seat valve M C 2 0 04 10 2018 1...