Standard and Aseptic Over-Pressure Relief Single Seat Valves - WR60/WR80 Series

Fit 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 below). Three diameters are available: 4", 5" and 6" for both air-to-raise (AR) on 1.5" – 4" WR61 valves, and air to lower (AL) on 2"-4" WR63 valves. Tef-Flow PEEK™ or metal seats are required for strength and durability. A stem flush is also available on WR80 pressure relief valves for aseptic applications.

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

• Download IGS File Format
• Download SAT File Format

3D Single Seat and Mix Proof Valve Drawings

• 60 Series and 70 Series, upper and lower bodies and accessory Drawings

2D Single Seat, Mix Proof, Over-Pressure Valve Drawings

• 2D 60 Series and 70 Series Drawings

Product Literature:

• DS-1224 Over-Pressure Relief Valves Data Sheet (1,000 KB, 8 pages)