Gate Valve Solid Wedge Vs Flexible Wedge

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.

Gate valve solid wedge vs flexible wedge.

Solid wedge flexible wedge split wedge or parallel disk. The flexible wedge is a one piece solid disk with a cut around the perimeter. Gate valves are available with a variety of disks. Gate valves are available with different disks or wedges.

Solid wedge is the most commonly used disk by its simplicity and strength. Velan s proven pressure seal design. 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. This problem overcome by using a flexible wedge gate valve.

Flexible wedge gate valve. A cast in recess or deeper and wider cut on wedge perimeter gives more flexibility but compromises the strength. These cuts vary in size shape and depth. Because its design allows the gate to flex as the valve seat compresses it.

Flexible wedge gate valves flex wedge. A shallow narrow cut on wedge perimeter gives less flexibility but retains strength. The most common were. Elongation causes the seats to compress against the gate and clamp the valve shut.

Flexible wedge gate valves flex wedge share. Disks of a gate valve. 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. Split wedge or flexible wedge type gate valves are expected to perform better than solid wedge gate valves when thermal binding is a concern.

Weir valves controls usa inc. A valve with this type of wedge can be installed in each position and it is suitable for almost. 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. Classification of gate valves.

The flex wedge valve has a single piece optimized gate design to provide minimized seat leakage. Ranging of the gate valves is usually made by the type of wedge used.