Waukesha
Cherry-Burrell Products: Over-Pressure Valves
Fit your pump with an external over-pressure relief valve. If pump discharge pressure our exceeds the set cracking-pressure, 4=-the valve will open to a relief path. The Adjustable-Spring actuator lets you set the desired relief cracking pressure right at the valve by simply turning the adjustment screw (see below). Three diameters are available: 4”, 5” and 6” for both air-to-raise (AR) on 1.5” – 4” W61 valves, and air-to-lower (AL) on 2”-4” W63 valves. TFP Seats are required for strength and durability. For clean-in-place applications (CIP), a piston in the actuator allows opening of the valve without having to over pressure it. After relieving or CIP is complete, the valve reseats in place.
- Exterior Adjustment with sealed cap to safeguard threaded area.
No exposed threads!
- Positive-Stop prevents overloading of spring and engages with the
sealed cap to lock in the setting.
- Cracking pressure adjustment range from zero (fully unloaded) to
maximum published holding pressure of standard, heavy-sprinq actuators.
- Piston for full opening/ by-pass
- Heavy-duty construction with (3) bearing locations and sealed,
welded construction
Examples of over-pressure protection:
  
 3D Over-Pressure Valves
4" through 6" Air to Raise and Air to Lower
3D Single Seat and Mix Proof Valve Drawings
2D Single Seat, Mix Proof, Over-Pressure Valve Drawings
Product
Literature:
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