valve
Valve (Valve), also known as the control of the flow of fluid medium flow, flow, pressure, temperature and other mechanical devices, the valve is the basic components of the pipeline system. Valve fittings are technically similar to pumps, and are often discussed as a separate category. Gas switch, faucet is the most common valve, butterfly valve, ball valve, gate valve, pressure reducing valve, globe valve, trap, safety valve, needle valve, check valve, filter, solenoid valve, diaphragm valve, exhaust valve , Flow meters, sanitary valves and so on; is also more common in the global point of sale is the largest of the German Aix valve, basically all models are manufactured. The valve can be operated manually or by handwheel, handle or pedal, or by changing the pressure, temperature and flow of the fluid medium. Valves can perform continuous or repeated operations on these changes, such as safety valves installed in hot water systems or steam boilers. In the more complex control system according to the external input (that is, adjust the flow through the pipeline to change the set point) need to use automatic control valve. Automatic control of the valve without manual operation according to its input and set, so that the valve accurately control the fluid medium requirements. ...