25P斯派莎克蒸汽减压阀

25P蒸汽减压阀安装和使用

1、 上海申弘阀门有限公司主营阀门有：减压阀(气体减压阀,可调式减压阀,波纹管减压阀,活塞式减压阀,蒸汽减压阀,先导式减压阀,空气减压阀,氮气减压阀,水用减压阀,自力式减压阀,比例减压阀)、安全阀、保温阀、低温阀、球阀、截止阀、闸阀、止回阀、蝶阀、过滤器、放料阀、隔膜阀、旋塞阀、柱塞阀、平衡阀、调节阀、疏水阀、管夹阀、排污阀、排气阀、排泥阀、气动阀门、电动阀门、高压阀门、中压阀门、低压阀门、水力控制阀、真空阀门、衬胶阀门、衬氟阀门。 安装减压阀之前必须对管路系统进行冲洗清理，以防焊渣、氧化皮等赃物流入阀内，影响阀门正常工作。

2、  减压阀应安装便于操作和维修的地方，并且必须直立安装在水平管路上，应注意使管路中介质的流向与阀体上箭头所示方向一致，切勿装反。

3、  减压阀在安装使用时，应先把旁通管路上的截止阀打开，排除管路中的冷凝水和汽水混合物，以防减压阀开启时产生水击现象损坏减压阀，当无异常现象后，按顺时针方向缓慢旋转调节螺钉，将出口压力调至所需要的压力（以阀后表压为准），调整好后，将锁紧螺母背紧，拧上防护罩。

减压阀标准一览表 
标准编号  标准中文名称  标准英文名称  JB/T10367-2002  液压减压阀      GB/T12245-1989  减压阀性能试验方法  Methods of performance test for pressure reducing valves GB/T12246-1989  先导式减压阀  Pilot-operated reducing valves  GB/T12244-1989  减压阀一般要求  General specification for pressure reducing valves GB/T1852-1993  船用法兰铸钢蒸汽减压阀  Marine steel flanged steam pressure reducing valves  GB10868-1989  电站减温减压阀技术条件   Specification of the steam converting valve for fossil power stations JB/T7376-1994(2005复审)   气动空气减压阀 技术条件       JB/T7310-1994(2005复审)   装载机用减压阀式先导阀     JB/T53361-1994  液压减压阀产品质量分等(试行)    JB/T53265-1999  先导式减压阀 产品质量分等     JB/T2205-2000  减压阀结构长度       NF P43-035-2000   建筑阀门.供水减压阀和复合供水减压阀.要求和试验   (Building valves - Water pressure reducing valves and combination water pressure reducing valves - Requirements and tests.)  NF A84-420-1991   气焊设备和有关方法.减压阀入品接头.尺寸   (Equipment for gas welding and allied processes. Pressure regulators inlet connections. Dimensions.)  NF M88-773-1981   商用丁烷容器装置.低压固定调节的家用商品丁烷减压阀   (INSTALLATIONS BURNING COMMERCIAL BUTANE. PRESSURE REGULATOR TRIP,LOW-PRESSURE FIXED FLOW,FOR COMMERCIAL BUTANE FOR DOMESTIC USE.)  NF M88-775-1990   装液态碳氢化合物的钢瓶.可移动部分和半移动部分用高压可调减压阀.功能.标记、试验   (LIQUEFIED HYDROCARBONS SYSTEMS IN CYLINDERS. FIXED  ADJUSTEMENT,HIGH PRESSURE REGULATOR FOR AND SEMI- PREMISES. CONSTRUCTION. OPERATION, MARKING,TESTS.)  NF M88-737-2003   可运输可再填充液化石油气瓶用减压阀   (Pressure relief valves for transportable refillable cylinders for Liquefied Petroleum Gas (LPG).)  NF E48-423-2001   液压传动.减压阀、顺序阀、卸载阀、 节流阀和止回阀.装配面   (Hydraulic fluid power - Pressure-reducing valves, sequence valves, unloading valves, throttle valves and check valves -  Mounting surfaces.)  ANSI/ASSE 1003-1995  家用供水系统用减压阀  (Water Pressure Reducing Valves for Domestic Water Supply Systems)  ANSI/ASSE 1046-1990  热膨胀减压阀  (Thermal Expansion Relief Valve)  ANSI Z 21.22a-1999  减压阀和真空减压阀  (Pressure Relief Valves and Vacuum Relief Valves)  ANSI Z 21.22b-2001  热水供应系统的减压阀  (Relief Valves for Hot Water Supply Systems (same as CSA 4.4b))  ANSI/ASTM F 1508-1997   用于蒸汽、气体和液体设备的角型减压阀规范   (Specification for Angle Style, Pressure Relief Valves for Steam, Gas, and Liquid Services)  ASME A112.4.1-1993  热水器减压阀排水管  (Water heater relief valve drain tubes) ASME PTC 25.3-1988  安全和减压阀   (Safety and relief valves) 

ASTM E 1008-2003  地热和其它高温液体设备用减压阀体的安装、检验及维修用标准实施规范   (Standard Practice for Installation, Inspection, and Maintenance  of Valve-body Pressure-relief Methods for Geothermal and Other  High-Temperature Liquid Applications)  标准编号  标准中文名称  标准英文名称  ASTM F 1795-2000   空气或氮气系统用减压阀标准规范   (Standard Specification for Pressure-Reducing Valves for Air or Nitrogen Systems)  ASTM F 1565-2000  蒸汽设备用减压阀标准规范   (Standard Specification for Pressure-Reducing Valves for Steam Service)  ASTM F 1508-1996   用于蒸汽、气体和液体设备的角型减压阀标准规范   (Standard Specification for Angle Style, Pressure Relief Valves for Steam, Gas and Liquid Services) ASTM F 1370-1992   船上给水系统用减压阀   (Standard Specification for Pressure-Reducing Valves for Water Systems, Shipboard)  BS EN 1567-2000   建筑物阀门.减压阀和组合减压阀.要求和试验   (Building valves - Water pressure reducing valves and combination water reducing valves - Requirements and tests)  BS ISO 5781-2000   液压传动.减压阀、顺序阀、卸荷阀、节流阀和止回阀.安装面   (Hydraulic fluid power - Pressure reducing valves, sequence valves, unloading valves, throttle valves and check valves - Mounting surfaces)  BS ISO 6264-1998  液压传动.减压阀.装配面   (Hydraulic fluid power - Pressure-relief valves - Mounting surfaces)  prEN 14071-2000   液化石油气（LPG）罐的减压阀 辅助设备   Pressure relief valves for LPG tanks - Ancillary equipment  BS 6283-2-1991   热水系统中使用的安全和控制装置.压力范围从1bar到10bar温度减压阀规范   (Safety and control devices for use in hot water systems  - Specifications for temperature relief valves for pressures from 1 bar to 10 bar)  BS 6283-4-1991   热水系统中使用的安全和控制装置.第 4部分:zui大供给压力为12bar,标准尺寸包括DN50的微量绷紧减压阀规范   (Safety and control devices for use in hot water systems - Specification for drop-tight pressure reducing valves of nominal size up to and including DN 50 for supply pressures up to and including 12 ba)  DIN EN 13953-2003   液化石油气(LPG)用可运输的可再充式储气瓶的减压阀   (Pressure relief valves for transportable refillable cylinders for Liquefied Petroleum Gas (LPG); German version EN 13953:2003)  DIN EN 1567-2000   建筑阀门.水减压阀和组合水减压阀.要求和试验   (Building valves - Water pressure reducing valves and combination water pressure reducing valves - Requirements and tests; German version EN 1567:1999) JIS B8652-2002   比例电动液压减压阀及安全阀的试验方法   (Test methods for electro-hydraulic proportional pressure relief valves and electro-hydraulic  proportional pressure reducing and relieving valves)  JIS F0504-1989  船上机械装置用减压阀的应用和压力调节  (Application and setting pressure of relief valves for ships' machinery)  UL 1478-1995  消防泵减压阀   (Fire pumps relief valves )  UL 1468-1995   防火设备用直接控制的减压阀和压力(Direct acting pressure reducing and pressure 
控制阀   restricting valves )  JIS B8666-2001  液压动力.减压阀.安装表面  (Hydraulic fluid power -- Pressure-relief valves -- Mounting surfaces)  JIS B8372-1994   气动装置用减压阀   (PRESSURE REDUCING VALVES FOR PNEUMATIC USE) JIS B8664-2001   液压动力.压力控制阀(不包括减压 阀)、顺序活门、释荷阀、节流阀和止回阀.安装表面   (Hydraulic fluid power -- Pressure-control valves (excluding pressure-relief valves), sequence valves, unloading valves, throttle valves and check valves -- Mounting surfaces)  JIS B8410 AMD 1-2003  水管用减压阀(修改件1)  (Pressure reducing valves for water works (Amendment 1))  JIS B8651-2002  比例电动液压减压阀试验方法  (Test methods for electro-hydraulic proportional pressure relief valves)  JIS B8410-1999   水管用减压阀   (Pressure reducing valves for water works) ISO 15500-12-2001   道路车辆.压缩天然气(CNG)燃料系统元部件.第12部分:减压阀   (Road vehicles - Compressed natural gas (CNG) fuel system components - Part 12: Pressure relief valve (PRV))  ISO 6264-1998  液压传动.减压阀.装配面   (Hydraulic fluid power - Pressure-relief valves - Mounting surfaces)  ISO 5781-2000   液压传动.减压阀、顺序阀、卸荷阀、节流阀和止回阀.装配面  (Hydraulic fluid power - Pressure-reducing valves, sequence valves, unloading valves, throttle valves and check valves - Mounting surfaces) GB/T10868-2005   电站减温减压阀    

4、  减压阀前应安装过滤器，以防止介质中的杂质进入减压阀，影响其性能。

5、  安装的减压阀前后应有一段直管，阀前直管长度约为600毫米，阀后直管长度约为1000毫米。

6、  减压阀进口还要装汽水分离器和疏水阀，减压阀出口也要装疏水阀。

25P斯派莎克蒸汽减压阀外形尺寸

斯派莎克25P蒸汽减压阀流量系数

25P蒸汽减压阀主要材料