It is another technical object of the invention to provide a gate valve in which a mounting structure of a gate and a shaft to each other is improved and second moment of area of the gate is increased

A cylindrical valve chamber having a vertical axis is formed in the valve body and intersects the flow passage to define diametrically opposed inlet and outlet openings in the chamber. The flow passag

In a gate valve having a rectangular gate, generation of flection at opposite end portions due to bending moment applied to the gate is suppressed easily. For this purpose, in the gate valve in which

The present invention provides a gate valve having a valve body formed with a flow passage. A cylindrical valve chamber having a vertical axis is formed in the valve body and intersects the flow passa

Gate valves are in widespread use for providing a positive control of the flow of fluids through pipe lines, and the like. These valves are normally provided with a gate member which is interposed bet

The purpose of gate valves of this type, as compared with more conventional single- gated valves, is that they seal against a predominant pressure on either side and exclude debris which might otherwi

A valve housing, a valve disc disposed in said valve housing so that it is selectively brought into contact with a valve seat provided on said valve housing, a valve rod sealingly projected from the i

A packingless gate valve is disclosed which includes a housing having opposed similar housing halves with primary resilient sleeve units which compressibly engage each other in the valve open conditio