Structure and performance of diaphragm of pneumatic valve

It is composed of single or multi-layer glued on both sides, and there are also rubber without fabric. According to its shape, the film pressing method is used. According to the requirements of use, we can manufacture the diaphragm of different materials and fabrics. The properties of the blends of nitrile butadiene rubber and polysulfide rubber for diaphragm, the properties of rubber compound used for sandwich canvas disc diaphragm (often called diaphragm) and the properties of some silicone rubber, fluororubber and chlorohydrin rubber membranes developed in recent years are as follows.

The working temperature range and pressure range of the diaphragm itself depend on the rubber type, fabric and structure. The diaphragm can work at - 50 ~ 100 ℃ and 0.4 ~ 0.8MPa; the fluororubber and silicone rubber diaphragm can work at - 80 ~ 232 ℃. The chlorohydrin rubber diaphragm can work under the pressure of 0.4 ~ 0.8 MPa, with good air tightness and aging resistance, and its service life is equal to that of engine overhaul.