【比例式减压阀】作用

YB43固定比例式减压阀、YB13X固定比例式减压阀，是一种等比例减低流经介质压力的调节阀。通常用于高层建筑、泵站及消防系统，既能减动压又能减静压，减压比例。该阀结构简单，选材，价格低廉，性能可靠。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。YB43X比例式减压阀参考比例有：2：1、3：1、4：1、3：2、5：2等，如客户有特殊要求，可在订单中说明。YB43X比例式减压阀主要由阀体、进口法兰、活塞、大缸套、小缸套、出口法兰及O型圈、密封垫等零件组成。比例式减压阀是利用阀内浮动活塞两端不同的截面积构成了阀前与阀后的压力差，改变阀后的压力达到减压目的。比例式减压阀结构*、性能*、流量大、开关平稳、无噪声、减压比例稳定、即“减动压”又“减静压”，并且有减少乃至消除“水锤”现象对管件与供水器具的破坏，消除不必要的振动，节约水源保护管网的作用。

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    

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【比例式减压阀】外形尺寸：