Wedge Gate Valve

Wedge gate valves act as reliable devices to connect and close the fluid in pipeline of in oil & gas, petrochemical refinery, coal-fired power generation and water treatment. It comes with two types of solid wedge and flexible.

 

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Key Specifications / Features

Wedge gate valves act as reliable devices to connect and close the fluid in pipeline of in oil & gas, petrochemical refinery, coal-fired power generation and water treatment. It comes with two types of solid wedge and flexible.

wedge gate valves are not piggable because of the void that is left in the bottom of the valve body when the valve is open. These valves do not have a bore through the gate itself; instead, the gate retracts into the valve body when open, which saves height space.

Wedge gate valves are commonly supplied with solid wedge up to 2” size and with flexible wedge for larger sizes.

 

Flexible Wedge Gate Valves

Flexible Wedge Gate Valves design consists of two independent and flexible wedge halves, that allow a relative movement to accommodate changes in the body seat angles.

Flexible Wedge
Flexible Wedge

Features and benefits

  1. Flexible wedgeis ground and lapped to a mirror finish and tightly guided to prevent dragging and seat damage.  Wedge is hardfaced with 13Cr, SS 316, Stellite 6, Monel or CoCr alloy.
  2. Seat faceis hardfaced with 13Cr, SS 316, Stellite 6, Monel or CoCr alloy;  and ground and lapped to a mirror finish.
  3. Body and bonnet joint accurately machined.
  4. Body and bonnet castings are precision machined.
  5. One-piece bonnet for better alignment and fewer parts for Class 150 up to NPS 16 (DN 400).
  6. Rotating stem nut is Austenitic ductile iron Gr. D-2C renewable in line (as shown).
  7. Design to ASME B16.34, API 600

 

Solid Wedge Gate Valves

Solid wedge is designed in one-piece model while flexible wedge offers a wedge shape for both seats.

Solid Wedge
Solid Wedge

Features and benefits

  1. Designed for 2”and below; bigger sizes are available upon request.
  2. The solid wedge is more reliable for durable operation compared to flexible wedge, while the cost is higher than flexible wedge gate valve.
  3. Design to API 602 for sizes 2″ and below; ASME B16.34, API 600 for 2″ and bigger

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