V46 and V47 Repair Parts and Service Instructions
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12. If servicing a low flow valve, place the stem washer and new diaphragms on the sensing element end of the
valve stem assembly. Use two diaphragms on 3/8 in., 1/2 in., and 3/4 in. valves and three diaphragms on 1 in.
and larger valves. Screw the diaphragm into place with the bellows push rod. Attach the sensing element to the
valve body. See Figure 7.
13. Place two new diaphragms on the spring housing side of the valve body. Screw into place with the seat guide
post (Figure 7).
14. Place the spring housing assembly over the seat guide post and secure in place with the four housing screws.
15. Adjust the valve to desired opening point. Then manually flush the valve. See the
section.
Figure 7: Low Flow Valves
ISO-loss Washer
Guide Plate Gasket
Post
Disc Stud
Disc Cup
Valve Disc
Push Rod
