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APV_BLV1_GB-0_012020.indd
Ball Valve
APV DELTA BLV1
Instruction Manual: GB - rev. 0
APV
GB
7. Installation and Commissioning
The installation position of the ball valve is arbitrary and can be
selected according to the local situation and the task to be fulfilled.
Note!
Observe welding instructions 7.1.
Caution!
Before first startup:
- Check the function of the control unit or valve position indication if
installed.
- Check for possible leakages during commissioning. Replace
defective seals.
7.1
Welding Instructions
- Before welding of the valve, remove all sensitive parts!
Dismantle the valve ball body with seals from the mating flanges.
-
Welding should only be carried out by certified welders (DIN EN ISO
9606-1) (seam quality DIN EN ISO 5817).
- The welding of the valve bodies must be undertaken in such a way
that the valve body is not deformed.
- TIG orbital welding is recommended.
- The preparation of the weld seam up to 3 mm thickness must be
carried out as a square butt joint without air. Consider shrinkage!
Caution!
After welding the mating flanges, and after performing any work
on the piping, do not operate the valves until the corresponding
areas of the installation and piping have been cleaned and welding
residue has been removed. If the piping is not cleaned before
operation, welding residue and dirt particles can settle in the valves
and cause damage to the valves and seals.
- If these welding instructions are not followed, any resulting damage
will not be covered by the warranty.
!
!
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