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25P蒸汽減壓閥安裝和使用

1、 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。 安裝減壓閥之前必須對管路系統進行沖洗清理，以防焊渣、氧化皮等贓物流入閥內，影響閥門正常工作。

2、  減壓閥應安裝便于操作和維修的地方，并且必須直立安裝在水平管路上，應注意使管路中介質的流向與閥體上箭頭所示方向一致，切勿裝反。

3、  減壓閥在安裝使用時，應先把旁通管路上的截止閥打開，排除管路中的冷凝水和汽水混合物，以防減壓閥開啟時產生水擊現象損壞減壓閥，當無異常現象后，按順時針方向緩慢旋轉調節螺釘，將出口壓力調至所需要的壓力（以閥后表壓為準），調整好后，將鎖緊螺母背緊，擰上防護罩。

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    

4、  減壓閥前應安裝過濾器，以防止介質中的雜質進入減壓閥，影響其性能。

5、  安裝的減壓閥前后應有一段直管，閥前直管長度約為600毫米，閥后直管長度約為1000毫米。

6、  減壓閥進口還要裝汽水分離器和疏水閥，減壓閥出口也要裝疏水閥。

25P斯派莎克蒸汽減壓閥外形尺寸

斯派莎克25P蒸汽減壓閥流量系數

25P蒸汽減壓閥主要材料