Diaphragm valve

All kinds of valves mentioned above, it has the disadvantage that it is fluid in the pipe flow is likely to leak out of the skin caused by the different parts of the valve assembly together. (Especially along the stem) in the case of a chemical that is very dangerous. Such leaks are very rare, although it may not be acceptable. In a diaphragm valve which will serve better.

Figure 8, the internal structure of the Diaphragm valve (1) the diaphragm (2) seat.


The diaphragm valve is used to push the diaphragm (1) which is made of a flexible material. (Usually a polymeric material) and press down to attach to the seat (2) below. It closes the valve. When we reduce the pressure to tighten the knots that serves to lift the diaphragm up. The diaphragm plate is lifted with the flexibility of its own. The valve opening. The same principle that a doctor or nurse at the rate of flow of water from contiguous to the patient. He used to squeeze the water hose. (I do not know what yet. If not, it is considered lucky by many).

Diaphragm valves work well with liquids with suspended solids in the mixture. Although the solid residue is located in the valve seat. However, with the flexibility of the diaphragm valve is closed, it can be. But the use of a diaphragm valve of this type can not be used at high temperatures and pressures.


MO Memoir This cast a long, almost the previous 9, then I need it before the next is the subject of the valve to the reverse flow (check valve or non-return valve) and the valve pressure relief (safety valve and relief valve. .)