200P型減壓閥

【200P型水用減壓閥】作用

200P型水用減壓閥通過調(diào)節(jié)調(diào)節(jié)彈簧壓力設(shè)定出口壓力，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(diào)式減壓閥,波紋管減壓閥,活塞式減壓閥,蒸汽減壓閥,先導(dǎo)式減壓閥,空氣減壓閥,氮?dú)鉁p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(diào)節(jié)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。利用膜片傳感出口壓力變化，通過導(dǎo)閥啟閉驅(qū)動活塞調(diào)節(jié)主閥節(jié)流部位過流面積的大小，實(shí)現(xiàn)減壓穩(wěn)壓功能。200P型水用減壓閥本系列減壓閥屬于先導(dǎo)活塞式減壓閥。200P型水用減壓閥由主閥和導(dǎo)閥兩部分組成。 200P型水用減壓閥主閥主要由閥座、主閥盤、活塞、缸套、彈簧等零件組成。200P型水用減壓閥導(dǎo)閥主要由閥座、閥瓣、膜片、彈簧、調(diào)節(jié)彈簧等零件組成。通過調(diào)節(jié)調(diào)節(jié)彈簧壓力設(shè)定出口壓力，利用膜片傳感出口壓力變化，200P型水用減壓閥通過導(dǎo)閥啟閉驅(qū)動活塞調(diào)節(jié)主閥節(jié)流部位過流面積的大小，實(shí)現(xiàn)減壓穩(wěn)壓功能。200P型水用減壓閥本產(chǎn)品主要用于蒸汽管路，起減壓穩(wěn)壓作用。
減壓閥是一種自動降低管路工作壓力的專門裝置，它可將閥前管路較高的水壓減少至閥后管路所需的水平。從流體力學(xué)的觀點(diǎn)看，減壓閥是一個(gè)局部阻力可以變化的節(jié)流元件，即通過改變節(jié)流面積，使流速及流體的動能改變，造成不同的壓力損失，從而達(dá)到減壓的目的。然后依靠控制與調(diào)節(jié)系統(tǒng)的調(diào)節(jié)，使閥后壓力的波動與彈簧力相平衡，使閥后壓力在一定的誤差范圍內(nèi)保持恒定。
減壓閥
（1） 調(diào)壓范圍：它是指減壓閥輸出壓力P2的可調(diào)范圍，在此范圍內(nèi)要求達(dá)到規(guī)定的精度。調(diào)壓范圍主要與調(diào)壓彈簧的剛度有關(guān)。 
（2） 壓力特性：它是指流量g為定值時(shí)，因輸入壓力波動而引起輸出壓力波動的特性。輸出壓力波動越小，減壓閥的特性越好。輸出壓力必須低于輸入壓力—定值才基本上不隨輸入壓力變化而變化。 
（3） 流量特性：它是指輸入壓力—定時(shí)，輸出壓力隨輸出流量g的變化而變化的持性。當(dāng)流量g發(fā)生變化時(shí)，輸出壓力的變化越小越好。一般輸出壓力越低，它隨輸出流量的變化波動就越小。

 
【200P型水用減壓閥】主要技術(shù)參數(shù)和性能指標(biāo)

【200P型水用減壓閥】主要零件材料

【200P型水用減壓閥】流量系數(shù)（Cv）

減壓閥標(biāo)準(zhǔn)一覽表 
標(biāo)準(zhǔn)編號  標(biāo)準(zhǔn)中文名稱  標(biāo)準(zhǔn)英文名稱  JB/T10367-2002  液壓減壓閥      GB/T12245-1989  減壓閥性能試驗(yàn)方法  Methods of performance test for pressure reducing valves GB/T12246-1989  先導(dǎo)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(shù)條件   Specification of the steam converting valve for fossil power stations JB/T7376-1994(2005復(fù)審)   氣動空氣減壓閥 技術(shù)條件       JB/T7310-1994(2005復(fù)審)   裝載機(jī)用減壓閥式先導(dǎo)閥     JB/T53361-1994  液壓減壓閥產(chǎn)品質(zhì)量分等(試行)    JB/T53265-1999  先導(dǎo)式減壓閥 產(chǎn)品質(zhì)量分等     JB/T2205-2000  減壓閥結(jié)構(gòu)長度       NF P43-035-2000   建筑閥門.供水減壓閥和復(fù)合供水減壓閥.要求和試驗(yàn)   (Building valves - Water pressure reducing valves and combination water pressure reducing valves - Requirements and tests.)  NF A84-420-1991   氣焊設(shè)備和有關(guān)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(diào)節(jié)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(tài)碳?xì)浠衔锏匿撈?可移動部分和半移動部分用高壓可調(diào)減壓閥.功能.標(biāo)記、試驗(yàn)   (LIQUEFIED HYDROCARBONS SYSTEMS IN CYLINDERS. FIXED  ADJUSTEMENT,HIGH PRESSURE REGULATOR FOR AND SEMI- PREMISES. CONSTRUCTION. OPERATION, MARKING,TESTS.)  NF M88-737-2003   可運(yùn)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(jié)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(tǒng)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(yīng)系統(tǒng)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(shè)備的角型減壓閥規(guī)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?zé)岷推渌邷匾后w設(shè)備用減壓閥體的安裝、檢驗(yàn)及維修用標(biāo)準(zhǔn)實(shí)施規(guī)范   (Standard Practice for Installation, Inspection, and Maintenance  of Valve-body Pressure-relief Methods for Geothermal and Other  High-Temperature Liquid Applications)  標(biāo)準(zhǔn)編號  標(biāo)準(zhǔn)中文名稱  標(biāo)準(zhǔn)英文名稱  ASTM F 1795-2000   空氣或氮?dú)庀到y(tǒng)用減壓閥標(biāo)準(zhǔn)規(guī)范   (Standard Specification for Pressure-Reducing Valves for Air or Nitrogen Systems)  ASTM F 1565-2000  蒸汽設(shè)備用減壓閥標(biāo)準(zhǔn)規(guī)范   (Standard Specification for Pressure-Reducing Valves for Steam Service)  ASTM F 1508-1996   用于蒸汽、氣體和液體設(shè)備的角型減壓閥標(biāo)準(zhǔn)規(guī)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(tǒng)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(yàn)   (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(jié)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(shè)備   Pressure relief valves for LPG tanks - Ancillary equipment  BS 6283-2-1991   熱水系統(tǒng)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(guī)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(tǒng)中使用的安全和控制裝置.第 4部分:zui大供給壓力為12bar,標(biāo)準(zhǔn)尺寸包括DN50的微量繃緊減壓閥規(guī)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(yùn)輸?shù)目稍俪涫絻馄康臏p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(yàn)   (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(yàn)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(jī)械裝置用減壓閥的應(yīng)用和壓力調(diào)節(jié)  (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(shè)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(jié)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(yàn)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(tǒng)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(jié)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