Bidirectional Vs Unidirectional Knife Gate Valve

The replaceable steel reinforced perimeter seat is mechanically retained between both halves of the two piece bolted body for unsurpassed performance in the most demanding applications.

Bidirectional vs unidirectional knife gate valve.

The biggest difference is price. You can expect to pay about 30 more for a bi directional knife gate valve. Bi directional knife gate valves will seat on either side of the gate and operate with back pressures providing adequate water tightness and has a tendency of avoiding any build up of solids that could prevent the valve from closing. Mvs knife gate valve can be operated through hand wheel rising stem and non rising stem chain wheel lever bevel gear electric actuator pneumatic cylinder and hydraulic actuator.

So you re probably wondering why don t i skip the confusion and just install all bidirectional knife gates. Knife gate valve seat options include metal seat and resilient seat which can be offered as unidirectional and bidirectional. The series 940 unidirectional knife gate valve features a single piece cast body design offers rugged performance in applications ranging from general purpose to severe media handling available with integral metal or replaceable soft seat the series 940 gate valve is easily automated for on off applications. Bi directional knife gate valves will seat on either side.

The bray series 752 bidirectional knife gate valve features a robust steel reinforced perimeter seat which provides bidirectional zero leakage shutoff. Designed for easy quick conversion between manual and pneumatic actuation.