译文：
减温减压阀是采用控制阀体内的启闭件的开度来调节介质的流量，将介质的压力降低，减温减压阀同时借助阀后压力的作用调节启闭件的开度，使阀后压力保持在一定范围内，并在阀体内或阀后喷入冷却水，将介质的温度降低，这种阀门称为减压减温阀。该阀的特点，是在进口压力不断变化的情况下，保持出口听压力和温度值在一定的范围内。减压阀是气动调节阀的一个必备配件，主要作用是将气源的压力减压并稳定到一个定值，以便于调节阀能够获得稳定的气源动力用于调节控制。 按结构形式可分为薄膜式、弹簧薄膜式、活塞式、杠杆式和波纹管式；按阀座数目可人为单座式和双座式；按阀瓣的位置不同可分为正作用式和反作用式。 按使用介质可分为蒸汽减压阀,空气减压阀,气体减压阀等.

“ Reduction Valve Overview ”是由提供的国际阀门新闻，译文仅供参考。另外，中国减压阀网还提供相关产品搜索：、、、、等。

原文：
Pressure Reduction Valve is the valve body opening and closing with the opening piece to adjust the flow of medium, medium pressure will be reduced by use of temperature and pressure reducing valve while the valve regulating the pressure of opening and closing the openingpiece, so that valve after the pressure was maintained at a certain range, and the valve in the valve body or sprayed into the cooling water, the lower the temperature of medium, such as decompression valve temperature valve reduction. The characteristics of the valve is in the inlet pressure under changing circumstances, to maintain the value of exports to listen to a certain pressure and temperature range. Valve pneumatic control valve is a necessary accessory, the main role is to source gas pressure of decompression and stabilization to a fixed value for the control valve to obtain a stable source of power for air conditioning control. Form of the structure can be divided into film, spring diaphragm, piston, lever-type and the corrugated tube; by the number of available seat and two-seat single-block human type; according to the location of the valve flap can be divided into positive and negative effects of different type and reaction-type. By using the media can be divided into the steam valve, air valve, gas valve and so on.