STEM AND DISC HOLDER COMPONENT REPLACE- to defective components. Be sure O-ring seal is in
MENT (See Fig. 4) position on valve stem.
Shut down system (supply air and control medium).
d.
Inspect integral valve seat (Fig. 2 ,
).
If defec-
tive, replace complete valve.
Replace parts as required (see PARTS LIST).
Remove operator and packing components as previ-
ously discussed.
Remove bonnet (Fig. 2.
4. VP5 13A models:
).
5. VP5 13B models:
a. Remove valve seat with special tool, Part No.
CCM3833, and lift out stem assembly.
b. Replace components as required by removing disc
holder mounting screw. See PARTS LIST for parts
ordering information.
a. Remove stem and disc holder assembly from valve
body.
b. Remove throttling plug (Fig. 2,
6. Reassemble and start up system. Observe operation
) for access through several cycles.
Fig. 4. Details of VP513B
75- 1707