减温减压器（PRDS） 减温减压器(PRDS)是一种将高温高压的蒸汽降压和减温集成在一体的独特设计。PRDS是一种单阀座，角型阀。通过减压后的高速蒸汽流切割垂直喷射的冷却水，保证冷却水快速雾化，从而为用户提供更加灵活的下游蒸汽的温度调节范围。COPES-VULCAN公司的减温减压器具有四十多年可靠的现场应用经验。锻造的阀盖和铸造的阀体可以用于不同的工况和不同的压力等级。主要特点如下：1．标准规格尺寸：1×2”，2×4”，3×6”，4×8”，6×12”2．阀体和阀盖材料可以选择：碳钢：A216-WCB合金钢：A217-WC6和A217-WC9不锈钢：A351-CF8M3．压力等级：从600磅到2500磅4．阀体按照B16.34标准设计，阀盖的密封等级能够达到Ⅷ(ASME压力容器标准)5．调节比高达50：16.温度控制精度高达±2.5℃7．阀盖连接形式：螺栓连接8．接管连接方式：法兰连接或者焊接9．可以采用不同的阀芯并快速更换。10．全导向的阀塞，可以有效的减少磨损。延长使用寿命。11．独特的降噪技术，减少噪音对工作环境的影响。12．应用先进的热套保护技术，减少介质对器壁的冲蚀和气蚀的影响。13．独特的多级套筒降压结构，有效的避免了气蚀的产生。14．结构合理，尺寸在同类产品中最小。15.冷却水均匀进入，确保在较小范围实现充分雾化。16．关断等级ANSI CLASSⅣ(可选CLASSⅤ)公司网站：Http://www.bjmanna.com.cnPressure Reducing and Desuperheating Valve (PRDS)One of the original combined pressure reducing and desuperheating valves, the Copes-Vulcan PRDS, has been reliably serving industry for over forty years.This model is a cast design available in a variety of materials with pressureratings from Class 600 to 2500 and split rated designs.The valve body is in accordance with ASME B16.34 and the bonnet closure to Section VIII of the ASME Unfired Pressure Vessel code.A comprehensive range of trim options can be fitted from a cage-guidedbalanced plug throttle to multi-stage pressure profiling design, HUSH., for active noise attenuation. The inlet steam and cooling water connections areeither flanged or butt-weld and the outlet steam connection is flanged.Standard sizes are (inlet x outlet connection size) 1x2" (25x50mm), 2x4"(25x100mm), 3x6" (80x150mm), 4x8" (100x200mm) and 6x12" (150x300mm).