A plug valve comprises a plug rotatable in a body of plastics. The plug fits closely within a thin walled metal can. The valve body is formed by moulding around the can and plug, the can thereafter re

A plug valve includes a valve body, an actuator, and an adapter. The valve body has an actuator end, a valve body end, and a stem chamber extending through said adapter. The valve body end of the adap

This invention relates to the ball plug valves comprising a ball plug of a cylindrical geometry with a hemispherical end rotatably engaging a matching cylindrical cavity with a closed hemispherical e

A plug valve having radial ports has a spindle with a plastics sleeve biased by underlying O-rings into sealing contact against the surrounding valve body to subdivide the space between the sleeve and

A spring loaded, tamperproof plug valve such as a pressure gas stop has the rotatable valve plug resiliently retained against removal from the valve body by two stacked, slit, frustoconical.

A rotary plug valve including a valve body open at one or both axial ends and having a bore with a lateral inlet port and a lateral outlet port communicating with the bore on opposite sides thereof.

An actuator for a plug valve of the type having a body with a central chamber having diametrically opposed inlet and outlet ports and a plug within the chamber having a transverse passage therethrough

A valve plug design is disclosed that uses a plug head band and a retaining ring to restrain a valve plug head to a valve plug stem. This invention is specifically directed to providing valve plugs wh