A body defining a concave valve chamber having a valve seat at a bottom thereof, said valve chamber being interconnected to an inflow passage and an outflow passage; a metallic main diaphragm provided

A bidirectional diaphragm valve is presented in which the flat, disk shaped diaphragm formed of elastomeric material is biased against the valve seat by means of a plunger which is not attached to the

A plate support in said body, a diaphragm plate formed with a plurality of passages and having a hollow trunk mounted on said support and separating said valve body into input and output chambers.

A diaphragm valve assembly, comprising: a body defining a valve chamber, a first passageway through the body, and a second passageway through the body, wherein the first and second passageways serve a

A diaphragm valve for the water intake in irrigation systems or similar comprises a hollow body having a port to connect a hydraulic or pneumatic system to the interior of the body of the valve and at

In a diaphragm valve of the class in which an elastomeric diaphragm cooperating with an associated annular valve seat is backed-up by a rigid spring retainer biased by a coiled spring, the improvement

A diaphragm valve is provided with means to prevent wrinkling of the diaphragm and to accurately control the flow through the valve. The valve has a body with at least one substantially flat valve sea

A diaphragm valve comprising a retainer having a plate portion, a diaphragm having a sealing section, a valve seat and a spring for pressing the sealing section of the diaphragm against the valve seat