SPX APV DELTA D2, Руководство по эксплуатации

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6
UK
6.1 Welding Instructions
DKRT
- Before welding of the valve, the welding flanges must be dismantled
from the housing. Tacking or adjustment of the valves should only
be undertaken with screwed down welding flanges.
- The welding of the mating flanges must be undertaken in such a
way that deformation does not occur.
- Welding should only be carried out by certified welders (EN 287-1).
(Seam quality EN 25817 "B").
- TIG orbital welding is best!
- The preparation of the weld seam up to 3 mm thickness can be
carried out as a square butt joint without air. (Consider shrinkage!)
- After welding of the mating 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 or can be transfered to
other parts of the installation.
- Any damage resulting from the non-observance of these welding
instructions is not subject to our guarantee.
7. Materials
- housing, valve ball, shafts 1.4404
- yoke, actuator 1.4301
- coupling 1.4057
- ball seal PTFE
- housing seal EPDM, FPM
- flange seal EPDM, FPM
- O-rings EPDM
- indicator PE-solid
plastic parts in actuator
- spindle bearing Vestamid L 1901
- air connection PA 6.6
- piston Hostaform C 9021
Double - Seat Ball Valve DELTA DKRT 2
Tank Outlet Valve
Operating Manual : Rev. 4