Liquid Controls V-15, V-30, VS-3, and VS-4 Valves - Manual (Page 7)

7
V-15 & V-30 Valves - Installation
Retrofit Installations (continued)
Mount the ball joint extension to the preset ring by
threading the screw into one of the holes at the back of
the register assembly. Thread the nut in place on the
screw.
With the ball joint extension secure on the preset ring,
attach the linkage assembly (Figure 6b). The linkage
assembly may require adjustment in order to mount to
the ball joint extension. If this is the case, either loosen
the handle and reposition on the valve shaft, or loosen
the nuts at the handle pivot (Figure 6c).
Once the handle and linkage assembly is secure,
proceed with setting the dwell and zero shut-off as
described on Pages 9-10.
Disassembling the Valve
The V-15 & V-30 Valves are under pressure from the
compression spring. The safest method for opening the
valve for service or maintenance is to place the valve on
a flat surface with the valve outlet facing down.
1. Loosen the four bolts (Items 610 & 611) located on
the valve cap (Item 124). The compression spring
will exert a force on the cap and push it up.
2. When the four bolts are almost completely removed,
check to see if the compression spring is still exerting
a force on the cap. If not, remove the four bolts and
washers completely. If there is still force on the cap,
remove two screws from opposite sides of the cap.
While bracing the cap with one hand, remove the
other two bolts and carefully release the cap until
the compression spring exerts no force.
3. Note the orientation of the cap and valve handle.
Remove the cap (Item 124). The internal
components are attached to the cap and will come
out of the valve housing with the cap.
4. To disassemble the cap assembly, it will be necessary
to remove the four cotter pins which hold the cup
(Item 133) to the links on each side of the cup. This
is only necessary when replacing the compression
spring or the cup.
5. To replace the dashpot washer, remove the retaining
ring on the end of the guide shaft.
Figure 7: V-15 Valve
Cotter Pins
Retaining Ring
Figure 6c: Handle Pivot
Figure 6a: Ball Joint Figure 6b: Linkage Attached to
Ball Joint
Figure 8: Piston