Purpose of a diaphragm
The diaphragm serves either as a barrier between two chambers, moving slightly up into one chamber or down into the other by relying on pressure differences. It is also used as a device that vibrates when certain frequencies are applied to it. This is also used instead of a stem washer. It is a kind of cap, round in shape, and is found on compression faucets. There are fabric-reinforced diaphragms utilizing a layer of engineered fabric material. This is considered as a part of the diaphragm construction. This layer of fabric gives tremendous flexibility in design. A very thin-walled diaphragm can withstand high pressures while at the same time remaining very flexible and responsive to minor pressure variations. The fabric reinforces diaphragm is made of various fabrics like polyester, nylon, Viton and silk.
Types of rubber used in rubber diaphragm
- Nitrile Rubber (NBR)
- Ethylene Propylene Diene Monomer (EPM, EPDM)
- Neoprene
- Styrene-Butadiene Rubber
- Silicone Rubber (SiR)
Application
Typical applications of rubber diaphragm include:
- Control devices
- Meters
- Regulators
- Pumps and
- Other special devices