SPX APV DELTA MS4, Руководство по эксплуатации, Страница: 10 / 51

5
DELTA MS4-UK0.qxp / 05.2008
UK
Diaphragm valve with fan support
DELTA MS4
Operating Manual rev. 0
- Installation has to be undertaken in such a way that fluids can
drain off the valve housing and should preferably be done in
vertical position.
- The valve housing can be welded direct into the pipeline
(completely dismantable valve insert).
- Attention: Observe welding instructions.
5.1 Welding Instructions
MS4
- Before welding of the valve, the valve insert must be dismantled
from the housing. Careful handling to avoid damage to the parts is
necessary.
- Welding should only be carried out by certified welders (EN 287-1).
(seam quality EN 25817 ,,B”)
- The welding of the valve housings must be undertaken in such a
way that the valve body is not deformed.
- The preparation of the weld seam up to 3 mm thickness must be
carried out in butt manner as a square butt joint without air.
(Consider shrinkage!)
- TIG orbital welding is best.
- After welding of the valve housing or of the mating flanges and after
work at the pipelines, the corresponding parts of the installation or
pipeline 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 non-observance of these welding
instructions is not subject to our guarantee.
5. Installation