A butterfly valve comprising an annular valve body, a ring-shaped elastic valve seat fitted to an inner circumference of the valve body, said valve seat having diametrically opposed openings.

An annular valve body, a disk-shaped valve member having a rotation axis and pivotally mounted on said annular valve body at each end of said rotation axis to open or shut a fluid path defined by said

Create state-of-the-art games with the same tools and content used to build Half-Life 2, Portal, and Team Fortress Valve Hammer Editor, the Source map creation tool Plug-ins for popular 3D art and ani

damper, exhaust valves, and other types of high-level primary purpose of most modern building equipped with ventilation, air conditioning and smoke control systems, in the event of fire, these systems

Accordingly it is the general object of the present invention to provide a butterfly valve wherein the circumference of the valve does not press into the inner surface of the seat ring when the valve

This article tells us the commom faults and troubleshooting of butterfly valves.

Fluorine butterfly, rubber lined butterfly valve used to achieve piping system as an on-off and flow control components, has been in the petroleum, chemical industry, metallurgy, water, electricity an

A high pressure butterfly valve having a pressure actuatable valve element that is flexed by fluid pressure to enhance the sealing ability of the valve in direct proportion to the pressure of the flui