.
2004 EDITION
CW-6/9
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MODEL
CW
Photo 1 Photo 2
7) Remount the gate guards (if the valve has them).
8) Carry out some operations with a loaded circuit and then re-tighten the gland follower
(5) to prevent leakage.
4.2.- Replacement of the seal (3) (only applicable to resilient seated valves):
1) Remove the valve from the pipeline.
2) Remove the seal retainer ring (10) which support the seals (3).
3) Remove the worn seal (3) and clean the seal housing.
4) Once the new seal (3) is cut according to size, insert it into the seat housing (making
sure that the union of the seal is at the top). (Photos 3 and 4)
Seal lengths
ND
50
65
80 100 125 150 200 250 300
350
400
450
500
600
Lengths (mm) 205 255 295 365 440 510 680 860 1020 1190 1350 1510 1630 2010
Photo 3 Photo 4
5) Insert the seal retainer ring (10) by hammering gently around the edge. (Photos 5 and
6)
6) Open and close the valve two or three times before returning it to the installation.
