Repair And Maintenance - CVS Controls P37 Instruction Manual

Note: The CVS P37 Regulator is a non-relieving regulator. The use of a relief valve is
recommended in the installation. Additionally the P37 cannot exhaust excess pressure at the
regulator assembly. It may be require to cycle downstream flow in order to achieve an
accurate output pressure.

Repair and Maintenance:

Refer to the assembly drawing for part identification to assist with the following instructions.
Disassembly:
1. Remove all spring pressure by turning the T-Handle (1) counter clockwise.
2. Remove Qty. 6 , screws (18) holding the Spring Case (2) and the Body Assembly (7)
together. Lift off the spring case, and remove the Spring (4), and Upper Spring Seat (3)
3. Unscrew the Diaphragm Assembly from the Driving Pintle (9), by first removing the
Bottom Plug (12), O-Ring (13), and Pintle Spring (11). Holding the Piston Assembly (10),
loosen the diaphragm assembly using a ¾" wrench or similar. Lift out the diaphragm
assembly from the regulator body.
Inspect all components for visible damage and replace or repair as necessary.
Reassemble in reverse order.
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