Resilient Wedge Gate Valves

Resilient Wedge Gate Valves Overview

Resilient wedge gate valves are a type of gate valve designed for reliable, bi-directional shutoff without the jamming issues associated with solid wedge gate valves. Instead of a solid metal wedge, they utilize a wedge made of rubber or other elastic material that seals against the valve body.Learn about resilient wedge gate valves, an advanced gate valve design that uses a flexible rubber wedge to achieve bubble-tight shutoff without jamming.

How They Work

      • The primary sealing element is a rubber wedge that compresses against the valve body to achieve shutoff

      • The elastic properties of the rubber allow it to deform and match the valve body seals perfectly

      • This creates a tight, bubble-tight shutoff in both flow directions

      • Since the wedge flexes rather than jamming into place, very little torque is required to operate the valve

Resilient Wedge Gate Valves Benefits

Bi-Directional Shutoff

      • Resilient wedges provide reliable shutoff in both flow directions

      • Solid wedge gate valves typically only seal in one direction

Lower Operating Torques

      • The rubber-to-metal seating reduces friction significantly

      • Valves can be operated with handwheels or automated with actuators

Reduced Wear

      • The elastic wedge minimizes damage to valve sealing surfaces

      • Resilient wedge gates have a much longer service life than solid wedge designs

No Jamming

      •  The flexing rubber wedge cannot get stuck in the shutoff position

      •  Allows for frequent and reliable operation

Resilient Wedge Gate Valves Applications

Resilient wedge gate valves are ideal for water and wastewater pipelines that require regular on/off operation. The bi-directional shutoff and low wear properties make them well-suited for:

      • Isolating sections of water distribution mains

      •  Controlling flows in treatment plant piping

      •  Regulating discharge from pumping stations

      •  Prevention of water hammer in hydroelectric plants

      •  General on/off service in water & wastewater plants

Key Takeaways

      •  Resilient wedge gates use a rubber sealing element instead of a solid metal wedge

      •  The elastic wedge provides shutoff without excessive torque or wear

      •  Ideal for applications requiring reliable, bi-directional shutoff