Gate Valve Solid Wedge Vs Flexible Wedge

This problem overcome by using a flexible wedge gate valve. Elongation causes the seats to compress against the gate and clamp the valve shut. A cast in recess or deeper and wider cut on wedge perimeter gives more flexibility but compromises the strength.

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Disks of a gate valve.

Gate valve solid wedge vs flexible wedge.

Flexible wedge gate valves flex wedge. Gate valves are available with a variety of disks. Chemicals oil gas power. Because its design allows the gate to flex as the valve seat compresses it.

Pressure binding sometimes in high temperature applications the flow medium such as water or steam is trapped in the valve bonnet area when the valve is closed for system shutdown. A shallow narrow cut on wedge perimeter gives less flexibility but retains strength. Weir valves controls usa inc. Ranging of the gate valves is usually made by the type of wedge used.

Wedge gate valve our parallel slide gate valve design offers many advantages over double disc wedge gate valves in providing tight reliable shut off in water and steam service. Solid wedge is the most commonly used disk by its simplicity and strength. Split wedge or flexible wedge type gate valves are expected to perform better than solid wedge gate valves when thermal binding is a concern. Solid wedge flexible wedge split wedge or parallel disk.

These cuts vary in size shape and depth. The most common were. Classification of gate valves. Gate valves are available with different disks or wedges.

Flexible wedge gate valve. Classification of gate valves is usually made by the type disk used. Velan s proven pressure seal design. Flexible wedge gate valves flex wedge share.

A valve with this type of wedge can be installed in each position and it is suitable for almost. The flexible wedge is a one piece solid disk with a cut around the perimeter. In a cold steam system if a solid gate fits tightly between the valve seat when the steam is heated and pipes elongate. 29 old right road ipswich ma 01938 usa t 1 978 744 5690 f 1 978 741 3626 www global weir comparison parallel slide gate valve vs.

Velan pressure seal flexible wedge gate valves are ideal for high pressure steam main steam isolation liquid feedwater isolation catalytic reformers hydrocrackers and other tough services. The flex wedge valve has a single piece optimized gate design to provide minimized seat leakage.

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