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

Gate valves of various types have been in use for many years. In general, gate valves are so called "hard seal" valves in which the gate valve is sealed in a metal to metal or hard seal. Such hard sea

The improved gate valve includes a body having horizontal inlet and outlet fluid flow passageways that are coaxial and that intersect a valve body cavity. A first annular seat is positioned in the bod

Many types of valves exist for industrial application including ball valves, globe valves, butterfly valves, plug valves and so forth but a type of valve that has been universally popular, particularl

A high-pressure, high-temperature gate valve which uses a flat faced gate seating on a flat and preferably interchangeable seat, the gate having a wedge-shape on the upstream side which assists in for

A gate valve for high and low pressure service conditions. Flanges extend from side edges of the gate member, the width of the gate member through the flanges being substantially identical to the diam

rior to the present invention, gate valves which included a gate intersecting a longitudinal flow path through the valve were generally know. It has been found that these gate valves and many other ty

Gate valves are often used to control the flow of abrasive slurries transported through tubular conduits. Gate valves used for this purpose are often lined with resilient material such as polyurethane