5 Installation at Site
37 of 72
0570.81/22-EN
CAUTION
Tripping of body pressure relief valve during commissioning
Damage to the seating faces due to foreign particles!
▷
Lock the body pressure relief valve in the closed position: The valve disc can be
pressed into the closed position via the rod by means of cover 160 fitted to
screw-type body 734, thus ensuring tight closure.
▷
Tapped holes are provided in screw-type body 734 for this purpose. The
relevant parts can be ordered at the supplying factory.
▷
The blocking device must be removed after the pressure test has been
completed.
Blocking device
1)
901
920
574
32-2
734
950
550.1
350
900
731
160
Fig. 20:
Blocking device
For pressure testing only; not permitted in regular valve duty.
1)
Lead-sealed
Table 5:
Parts list
Part No.
Description
Material
Material number
32-2
Axial needle bearing
Steel
-
160
Cover
P 250 GH
1.0460
350
Valve disc
X 39 CrMo 17-1
1.4122
500
Ring
X6CrNiTi18-10
1.4541
520
Sleeve
13 CrMo 4-5
1.7335
550.1
Disc
X 20 Cr 13
1.4021