Welding Instructions - SPX FLOW APV DELTA RG4 Instruction Manual

APV
APV_RG4_ATEX_UK-0_032018.indd
Modulating Valve
DELTA RG4-ATEX
Instruction Manual: UK-0
7. Installation
7.2. Welding instructions
- Welding may only be carried out by certified welders (DIN EN ISO
9606-1). (Seam quality DIN EN ISO 5817).
- Before welding, the insert and the seals must be dismantled.
- During tacking, the lower and lateral flange must be connected with
the housing.
- Welding of the valve housings must be undertaken in such a way
that deformation strain cannot be transfered to the valve body.
- The preparation of the weld seam up to 3 mm thickness must
be carried out in butt manner as an square butt joint without air.
(Consider shrinkage!)
- TIG orbital welding is best!
- After welding of the flanges and after work at the pipelines, the
corresponding parts of the installation or pipelines must be cleaned
from welding residues and soiling.
If these cleaning instructions are not observed, welding residues
and dirt particles can settle in the valve and cause damage.
- Any damage resulting from the nonobservance of these welding
instructions is not subject to our guarantee.
UK
10