【比例式減壓閥】作用

YB43固定比例式減壓閥、YB13X固定比例式減壓閥，是一種等比例減低流經介質壓力的調節閥。通常用于高層建筑、泵站及消防系統，既能減動壓又能減靜壓，減壓比例。該閥結構簡單，選材，價格低廉，性能可靠。上海申弘閥門有限公司主營閥門有：減壓閥(氣體減壓閥,可調式減壓閥,波紋管減壓閥,活塞式減壓閥,蒸汽減壓閥,先導式減壓閥,空氣減壓閥,氮氣減壓閥,水用減壓閥,自力式減壓閥,比例減壓閥)、安全閥、保溫閥、低溫閥、球閥、截止閥、閘閥、止回閥、蝶閥、過濾器、放料閥、隔膜閥、旋塞閥、柱塞閥、平衡閥、調節閥、疏水閥、管夾閥、排污閥、排氣閥、排泥閥、氣動閥門、電動閥門、高壓閥門、中壓閥門、低壓閥門、水力控制閥、真空閥門、襯膠閥門、襯氟閥門。YB43X比例式減壓閥參考比例有：2：1、3：1、4：1、3：2、5：2等，如客戶有特殊要求，可在訂單中說明。YB43X比例式減壓閥主要由閥體、進口法蘭、活塞、大缸套、小缸套、出口法蘭及O型圈、密封墊等零件組成。比例式減壓閥是利用閥內浮動活塞兩端不同的截面積構成了閥前與閥后的壓力差，改變閥后的壓力達到減壓目的。比例式減壓閥結構*、性能*、流量大、開關平穩、無噪聲、減壓比例穩定、即“減動壓”又“減靜壓”，并且有減少乃至消除“水錘”現象對管件與供水器具的破壞，消除不必要的振動，節約水源保護管網的作用。

減壓閥標準一覽表 
標準編號  標準中文名稱  標準英文名稱  JB/T10367-2002  液壓減壓閥      GB/T12245-1989  減壓閥性能試驗方法  Methods of performance test for pressure reducing valves GB/T12246-1989  先導式減壓閥  Pilot-operated reducing valves  GB/T12244-1989  減壓閥一般要求  General specification for pressure reducing valves GB/T1852-1993  船用法蘭鑄鋼蒸汽減壓閥  Marine steel flanged steam pressure reducing valves  GB10868-1989  電站減溫減壓閥技術條件   Specification of the steam converting valve for fossil power stations JB/T7376-1994(2005復審)   氣動空氣減壓閥 技術條件       JB/T7310-1994(2005復審)   裝載機用減壓閥式先導閥     JB/T53361-1994  液壓減壓閥產品質量分等(試行)    JB/T53265-1999  先導式減壓閥 產品質量分等     JB/T2205-2000  減壓閥結構長度       NF P43-035-2000   建筑閥門.供水減壓閥和復合供水減壓閥.要求和試驗   (Building valves - Water pressure reducing valves and combination water pressure reducing valves - Requirements and tests.)  NF A84-420-1991   氣焊設備和有關方法.減壓閥入品接頭.尺寸   (Equipment for gas welding and allied processes. Pressure regulators inlet connections. Dimensions.)  NF M88-773-1981   商用丁烷容器裝置.低壓固定調節的家用商品丁烷減壓閥   (INSTALLATIONS BURNING COMMERCIAL BUTANE. PRESSURE REGULATOR TRIP,LOW-PRESSURE FIXED FLOW,FOR COMMERCIAL BUTANE FOR DOMESTIC USE.)  NF M88-775-1990   裝液態碳氫化合物的鋼瓶.可移動部分和半移動部分用高壓可調減壓閥.功能.標記、試驗   (LIQUEFIED HYDROCARBONS SYSTEMS IN CYLINDERS. FIXED  ADJUSTEMENT,HIGH PRESSURE REGULATOR FOR AND SEMI- PREMISES. CONSTRUCTION. OPERATION, MARKING,TESTS.)  NF M88-737-2003   可運輸可再填充液化石油氣瓶用減壓閥   (Pressure relief valves for transportable refillable cylinders for Liquefied Petroleum Gas (LPG).)  NF E48-423-2001   液壓傳動.減壓閥、順序閥、卸載閥、 節流閥和止回閥.裝配面   (Hydraulic fluid power - Pressure-reducing valves, sequence valves, unloading valves, throttle valves and check valves -  Mounting surfaces.)  ANSI/ASSE 1003-1995  家用供水系統用減壓閥  (Water Pressure Reducing Valves for Domestic Water Supply Systems)  ANSI/ASSE 1046-1990  熱膨脹減壓閥  (Thermal Expansion Relief Valve)  ANSI Z 21.22a-1999  減壓閥和真空減壓閥  (Pressure Relief Valves and Vacuum Relief Valves)  ANSI Z 21.22b-2001  熱水供應系統的減壓閥  (Relief Valves for Hot Water Supply Systems (same as CSA 4.4b))  ANSI/ASTM F 1508-1997   用于蒸汽、氣體和液體設備的角型減壓閥規范   (Specification for Angle Style, Pressure Relief Valves for Steam, Gas, and Liquid Services)  ASME A112.4.1-1993  熱水器減壓閥排水管  (Water heater relief valve drain tubes) ASME PTC 25.3-1988  安全和減壓閥   (Safety and relief valves) 

ASTM E 1008-2003  地熱和其它高溫液體設備用減壓閥體的安裝、檢驗及維修用標準實施規范   (Standard Practice for Installation, Inspection, and Maintenance  of Valve-body Pressure-relief Methods for Geothermal and Other  High-Temperature Liquid Applications)  標準編號  標準中文名稱  標準英文名稱  ASTM F 1795-2000   空氣或氮氣系統用減壓閥標準規范   (Standard Specification for Pressure-Reducing Valves for Air or Nitrogen Systems)  ASTM F 1565-2000  蒸汽設備用減壓閥標準規范   (Standard Specification for Pressure-Reducing Valves for Steam Service)  ASTM F 1508-1996   用于蒸汽、氣體和液體設備的角型減壓閥標準規范   (Standard Specification for Angle Style, Pressure Relief Valves for Steam, Gas and Liquid Services) ASTM F 1370-1992   船上給水系統用減壓閥   (Standard Specification for Pressure-Reducing Valves for Water Systems, Shipboard)  BS EN 1567-2000   建筑物閥門.減壓閥和組合減壓閥.要求和試驗   (Building valves - Water pressure reducing valves and combination water reducing valves - Requirements and tests)  BS ISO 5781-2000   液壓傳動.減壓閥、順序閥、卸荷閥、節流閥和止回閥.安裝面   (Hydraulic fluid power - Pressure reducing valves, sequence valves, unloading valves, throttle valves and check valves - Mounting surfaces)  BS ISO 6264-1998  液壓傳動.減壓閥.裝配面   (Hydraulic fluid power - Pressure-relief valves - Mounting surfaces)  prEN 14071-2000   液化石油氣（LPG）罐的減壓閥 輔助設備   Pressure relief valves for LPG tanks - Ancillary equipment  BS 6283-2-1991   熱水系統中使用的安全和控制裝置.壓力范圍從1bar到10bar溫度減壓閥規范   (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   熱水系統中使用的安全和控制裝置.第 4部分:zui大供給壓力為12bar,標準尺寸包括DN50的微量繃緊減壓閥規范   (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   液化石油氣(LPG)用可運輸的可再充式儲氣瓶的減壓閥   (Pressure relief valves for transportable refillable cylinders for Liquefied Petroleum Gas (LPG); German version EN 13953:2003)  DIN EN 1567-2000   建筑閥門.水減壓閥和組合水減壓閥.要求和試驗   (Building valves - Water pressure reducing valves and combination water pressure reducing valves - Requirements and tests; German version EN 1567:1999) JIS B8652-2002   比例電動液壓減壓閥及安全閥的試驗方法   (Test methods for electro-hydraulic proportional pressure relief valves and electro-hydraulic  proportional pressure reducing and relieving valves)  JIS F0504-1989  船上機械裝置用減壓閥的應用和壓力調節  (Application and setting pressure of relief valves for ships' machinery)  UL 1478-1995  消防泵減壓閥   (Fire pumps relief valves )  UL 1468-1995   防火設備用直接控制的減壓閥和壓力(Direct acting pressure reducing and pressure 
控制閥   restricting valves )  JIS B8666-2001  液壓動力.減壓閥.安裝表面  (Hydraulic fluid power -- Pressure-relief valves -- Mounting surfaces)  JIS B8372-1994   氣動裝置用減壓閥   (PRESSURE REDUCING VALVES FOR PNEUMATIC USE) JIS B8664-2001   液壓動力.壓力控制閥(不包括減壓 閥)、順序活門、釋荷閥、節流閥和止回閥.安裝表面   (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  水管用減壓閥(修改件1)  (Pressure reducing valves for water works (Amendment 1))  JIS B8651-2002  比例電動液壓減壓閥試驗方法  (Test methods for electro-hydraulic proportional pressure relief valves)  JIS B8410-1999   水管用減壓閥   (Pressure reducing valves for water works) ISO 15500-12-2001   道路車輛.壓縮天然氣(CNG)燃料系統元部件.第12部分:減壓閥   (Road vehicles - Compressed natural gas (CNG) fuel system components - Part 12: Pressure relief valve (PRV))  ISO 6264-1998  液壓傳動.減壓閥.裝配面   (Hydraulic fluid power - Pressure-relief valves - Mounting surfaces)  ISO 5781-2000   液壓傳動.減壓閥、順序閥、卸荷閥、節流閥和止回閥.裝配面  (Hydraulic fluid power - Pressure-reducing valves, sequence valves, unloading valves, throttle valves and check valves - Mounting surfaces) GB/T10868-2005   電站減溫減壓閥    

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