4-27. PRESSURE REGULATING VALVE REPAIR.
This task consists of:
INITIAL SETUP :
General Mechanics Tool Kit (Item 1, App B)
Detergent, General Purpose (Item 1, App E)
Pipe Wrench (Item 2, App B)
Wiping Rag (Item 2, App E)
Vice (Item 2, App B)
Anti-seize (Item 4, App E)
Diaphragm (Item 26, App I)
Eyebolt. 3/4 inch
Packing (Item 27, App I)
Equipment Condition :
Disc (Item 28, App I)
Pressure regulating valve removed from water
system (para 3-4a)
To aid disassembly, loosen eight nuts (3, figure 4-19) on cover before removing pressure
regulating valve from frame.
Remove Valve. Refer to figure 4-17.
Remove two nuts (1), bolts (2) and flat washers (2) from bracket (6).
Remove two bolts (4), flat washers (5), and bracket (6) from top of pressure regulating valve (9).
Repeat steps (1) and (2) for bracket (6) on other side of pressure regulating valve (9).
If required, remove plug (7) from top of pressure regulating valve (9) and install 3/4-inch eyebolt
Pressure regulating valve is heavy/difficult to handle. To prevent injury to personnel use a lifting
device to remove valve from frame.
Pressure regulating valve must be repositioned during removal to clear sides of frame.
Using lifting device, carefully hoist pressure regulating valve (9) from frame (10). Turn valve as
required to clear sides of frame.