Relief Valves

Relief Valves - Manually Adjustable - 60R Series by Waukesha Cherry-Burrell

Relief Valves - Manually Adjustable - 60R Series

Versatile, manually adjustable relief valve for pipeline protection. Durable, compact, and easy to operate.

  • Manually adjustable, lockable cap for setting the relief pressure
  • 316L sanitary construction with No. 4 internal polish
  • Choice of seats: PTFE O-Ring or metal
  • Choice of spring pressures: 50 lb. (23 kg), 100 lb. (45 kg) or 300 lb. (136 kg)
  • Choice of body styles: single outlet "T" style or cross body
  • Connections: S-Line, Q-Line, Bevel Seat or Weld
  • Connection sizes: 1½" or 2" (38 mm or 51 mm)
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Relief Valves - Air Vent - 40CF-AR Series

Relief Valves - Air Vent - 40CF-AR Series

For installation on pump suction lines, the 40CF-AR Air Vent Valve is designed to operate as a CIP return air relief, and operates against either vacuum or positive pressure. For proper operation, the valve should be mounted vertically.

  • The 40CF-AR is available in 1" - 4" (25mm - 102mm) sizes
  • S-Line connections are standard. Other connections are available on request
  • The 40CF-AR has a polypropylene ball that acts between the upper and lower machined seats.
  • The valve body is machined stainless steel, either 304 or 316
  • Buna or FKM gaskets
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Over-Pressure Relief Single Seat Valves - WR60/WR80 Series by Waukesha Cherry-Burrell

Enhance your pump with an external over-pressure relief valve. If pump discharge pressure exceeds the set cracking pressure, 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 graphics above). Three diameters are available: 4", 5" and 6" (102mm, 127mm and 152mm) for both air-to-raise (AR) on 1.5" – 4" (38mm - 102mm) W61 valves and air to lower (AL) on 2" - 4" (51mm - 102mm) W63 valves. Tef-Flow PEEK™ or metal 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.

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