Parallel Slide Gate Valve Vs Wedge Gate Valve

Parallel slide gate valve provides a smooth flow path between seats.

Parallel slide gate valve vs wedge gate valve.

System pressure is used to provide isolation. Parallel slide gate valves double disk. In case one half of the disk is out of alignment. The closing is only made over one of the seats.

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. Weir valves controls usa inc. Split wedge or parallel disks gate valve. This design of gate valve is commonly used for clean fluids and steam applications.

Gate valve body bonnet designs. Moreover gate valves and butterfly valves have different body and disc designs as stated below. Split wedge disk consists of two solid pieces and holds together with the help of a special mechanism. The split disk can be in a wedge shape or a parallel disk type.

The parallel slide gate valves are mainly used in the field chemical petroleum natural gas designed to provide isolation and transmission of flow in a piping system or a component when closed sometimes can be installed in the pump outlet for regulating or control of flow. Two discs and just one wedge design gate valve. By comparison a double disc wedge gate valve relies upon torque force to wedge the disc into the valve body to provide shut off. Gate valves use a gate or a wedge whilst butterfly valves use a rotating disc to allow or prevent fluid flow.

Unique parallel slide forged cage unit design comprises all operating parts of the slide discs. Bolted bonnet gate valve screwed bonnet gate valve pressure seal bonnet and. Providing tight shutoff under the most severe conditions this exclusive disk and wedge design resists effects of extreme temperatures gross thermal transients high and low differential pressures and dual phase fluids. You can see the same in images.

Velan pressure seal parallel slide gate valves are ideal for clean service and steam. Consequently these components must be made of metals which do not gall or tear when in sliding contact with each other. The disk is free to adjust itself to the seating surface. 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.