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

A new and improved gate valve suitable for use with high pressure, high temperature corrosive fluids such as those developed in coal gasification processes, uranium enrichment and the like comprises a

A gate valve of the present invention comprises a valve housing, a valve disc disposed in said valve housing so that it is selectively brought into contact with a valve seat provided inside of said va

A gate valve of the present invention comprises a valve housing, a valve disc disposed in said valve housing so that it is selectively brought into contact with a valve seat provided inside of said va

A gate valve comprising a valve body, a gate, a bonnet assembly and an actuator assembly. The gate having a closure area, a flow opening extending through the gate, and a recess circumscribing the flo