Waueksaha WR6 & Wr80 Series Valves

Over-Pressure Relief Valves

Key Features of WR60 & WR80 Series Valves

• Protect 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 allows users to set the desired relief cracking pressure right at the valve by simply turning the adjustment screw. The relief pressure setting can be bypassed to completely open the valve for CIP cleaning without over-pressuring the valve and pipeline.
  • Utilizes standard W60/W80 single seat components offering machined-from bar bodies, modular design, Tef-Flow™ P stems, and low cost of ownership.
  • Adjustable-spring, maintenance-free actuator allows easy setting of desired relief cracking pressure.
  • Actuator piston bypasses relief pressure setting and fully opens valve for CIP cleaning without need to over-pressurize the valve and pipeline.
  • Multiple body styles provide minimal dead-leg relief configurations with pump for efficient cleaning and processing.
  • Various controls options available on valve for feedback and automation.
  • W80 stem flush adapter available for aseptic applications.

Installation Features:

• • Bidirectional flow with rotors secured by double jam nuts
  • No restrictions on flow direction or shaft position
  • Versatile 3-way gear case mounting, including vertical port alignment
  • Upper or lower shaft positioning options
  • Easy conversion from single O-ring to mechanical seals
  • Interchangeable installation dimensions with other Universal Series pumps

Adapter Options:

• Standard W60 Adapter:
  • The ‘standard’ adaptor is used on all models of short and long stroke W60 Series valves. Machined from SS 316L bar with a thick cross-section, the adaptor adds strength to the valve body and provides alignment for the stem. The outer perimeter seals to the valve body with an o-ring that is located forward to the product zone to minimize crevices. The product stem passes through the adaptor and is sealed to the adaptor with an o-ring. A Teflon® bearing guides the stem and takes up the mechanical loading imparted by hydraulic forces. This increases the service life of the stem seal. Adaptors are made in 1"-6" (25mm -152mm) sizes.
• W60 High Pressure Adapter:
  • The pressure limitation of the W60 adaptor is the sealing capability of the dynamic o-ring on the product stem. This variation of the W60 adaptor uses a backing ring added on the atmospheric side to support the stem o-ring. This significantly boosts the pressure rating on the stem o-ring. The product stem passes through the adaptor and is sealed to the adaptor with an o-ring and is guided by a Teflon® bearing.
• W80 Adapter:
  • This adaptor is used to convert a ‘standard’ W60 series valve to a W80. The outer perimeter seals to the valve body with an o-ring that is located forward to the product zone to minimize crevices. The product stem passes through the adaptor and is sealed in the upper part and the lower part of the adaptor with o-rings. The space between the o-rings is flushed with a suitable liquid or steam. The Teflon® bearing is located in the flushed chamber. Adaptors are made in 1"-6" (25mm - 152mm) sizes. For vacuum-rated, extended shelf-life (ESL) applications, the W80A adaptor adds steam trace to the adapter-to-valve body connection.
• Wiping Stem Seal Adapter:
  • For high-risk and hard to clean product applications, the wiping stem seal fills the gap between the product zone and the traditional o-ring stem seal. The adaptor is a two-piece design to allow easy inspection or replacement of the wiping stem seal. The outer perimeter seals to the valve body with an o-ring that is located forward to the product zone to minimize crevices. A Teflon® bearing is used to guide and support the valve stem.