SPX APV DELTA DF plus 2, Руководство по эксплуатации

Страница: 14 / 43

9
UK
- The valve must be installed in vertical position.
Fluids are, therefore, freely drainable from the valve housing and
from the leakage chamber.
- Valves can be welded direct into the pipelines
(completely dismantable valve insert).
- Heights of installation and dismantling (see section 7) .
Attention: Observe welding instructions.
6.1 Welding Instructions
- Before welding of the valve, dismantle the valve insert from the
housing. Remove the housing cover (1) with seals.
A 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 housing 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 should
be carried out as a sqare butt joint without air.
(Consider shrinkage!)
- TIG orbital welding is best!
- After welding of the housing or 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.
- Any damage resulting from the non-observance of these welding
instructions is not subject to our guarantee.
6. Installation
Double Seat Valve
DELTA DFplus2
Operating Manual: rev. 1
DELTA DFplus2 - UK1 / qxd.12.2004