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HIGH PRESSURE CONTROL VALVE
Installation, Operation & Maintenance Guide
20
Model: PO, PC
ASSEMBLY
Fig. 15-1
NOTE:
For pressure closed, flip Diaphragm Assembly upside
down and place onto Yoke. See Fig. 15-1
Insert Bolts in Bonnet and tighten.
Insert Bolts in Bonnet and tighten. See Fig. 15-2
Insert O-Ring (not shown) on the Upper Adjusting Screw
and tighten it on top of Bonnet. See Fig. 15-3
Insert Breather Plug. See Fig. 15-4
NOTE:
Make sure you tighten the Bolts in a criss-cross pattern to
avoid any miss alignment. DO NOT OVER TIGHTEN. For
1in. and 2in. tighten Bolts from 25-30 ft/lbs torque. See
Fig. 15-2
Adjusting
Screw
Breather
Plug
15 Pressure Closed
Fig. 15-2
Fig. 15-3
Fig. 15-4
Diaphragm Assembly