Pressure reducing valve is introduced. the role type pressure reducing valve, the simplest of the pressure reducing valve, direct acting pressure reducing valve, with flat diaphragm or bellows. Because it is independent structure, there is no need to install external sensing line in the downstream. It is the smallest in three types of pressure reducing valve, use one of the most economic, designed for low flow rate. Direct acting downstream of the accuracy of the pressure reducing valve is usually set point of + / - 10%. Piston type pressure reducing valve, the two types of pressure reducing valve set valve, pilot valve and main valve, in a body. The design of the pilot valve is similar to direct acting type pressure reducing valve. Exhaust pressure from the pilot valve on the piston, the piston to open the main valve. If the main valve is bigger, cannot open directly, this design can use open the main valve inlet pressure. Therefore, this type of pressure reducing valve, compared with the direct acting type pressure reducing valve, under the same pipe size, capacity and accuracy ( +/- 5%) Higher. Same as the direct acting type pressure reducing valve, pressure reducing valve internal stress perception, without external sensing line installation. Diaphragm valve: in this type of pressure reducing valve, double diaphragm instead of the piston in the afferent type pressure reducing valve. The increase of the diaphragm area of the main Industrial Valves to open a bigger, and under the same pipe size, its capacity is larger than within the guide piston pressure reducing valve. In addition, the diaphragm is more sensitive to stress change, the accuracy of + / - 1%. Positioning accuracy is higher due to the downstream of the sensing line ( outside) The location less gas or liquid turbulence. The pressure reducing valve is very flexible, can use different types of pilot Industrial Valves ( Such as pressure valve valve, air valve, solenoid valve, temperature or several kinds of valve and form a complete set of applicable) 。 In this paper, the keyword search: more valve product information long ding automatic control equipment co. , LTD
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