A valve housing having a cylindrical fluid passage therethrough; a disc shaped valve body having a hard annular rim of elliptical cross-sectional shape thereon extending in the plane of the valve body

A butterfly valve including a housing having a hollow passage defining a flow path and a shaft mounted to the housing and extending transversely across the flow path. The shaft defines an axis of rota

An annular inflatable sealing member located in said housing, said annular inflatable sealing member made from an elastomer material, said annular inflatable sealing member having elastomer legs that

The present invention relates to valves of the type having a pivoted throttle plate or butterfly member and particularly valves of this type which are employed for valving flow from a single inlet to

This invention relates to a butterfly valve and a method for making same.

An improved butterfly valve for intercepting a conduit where substances flow, especially suitable for the pharmaceutical, alimentary and chemical fields The valve comprises an annular body integral wi

A butterfly valve for a media under high pressure and/or at high temperature including a housing provided with a passage for the medium, a butterfly arranged as a shut-off member within the passage, a

A butterfly valve, comprising a housing containing a through-opening; a butterfly disk which is opened or closed by rotation of the butterfly disk on a shaft connected to the housing so that contact b