止回閥標準主要涉及結構、尺寸、技術要求等方面，但目前暫無公開的完整在線閱讀版本，如需正式標準出版物，可聯系中國標準出版社獲取。

• 升降式止回閥：依靠介質本身流動而自動開、閉閥瓣，防止介質倒流，又稱逆止閥、單向閥、逆流閥、背壓閥
• 旋啟式止回閥：又稱單向閥或逆止閥，適用于低流速和流動不常變化的大口徑場合，但不宜用于脈動流，密封性不及升降式，分單瓣式、雙瓣式和多瓣式三種
• 蝶式止回閥：也叫對夾式止回閥，小巧占用空間小，依靠介質本身流動而自動開、閉閥瓣
• 壓緊式止回閥：一般做為鍋爐給水和蒸汽切斷用閥，具有升降式止回閥和截止閥的綜合機能
• 管道式止回閥：閥瓣沿著閥體中心線滑動，體積小、重量輕，但流體阻力系數比旋啟式止回閥略大

• 法蘭連接緩閉止回閥的結構長度尺寸應按GB/T12221的規定或按用戶約定
• 蝶形止回閥開啟時，蝶板伸出長度不應影響使用

• 水泵出口處安裝：能在水泵停止運行時，迅速關閉閥門，防止水流倒灌回水泵，保護水泵不受損壞
• 蓄水池旁通管安裝：可阻止池水倒流至給水系統，保障供水安全

• GB/T 12235-2007《石油、石化及相關工業用鋼制截止閥和升降式止回閥》：涉及石油、石化及相關工業用鋼制截止閥和升降式止回閥的規范

注意：止回閥屬于自動閥類，主要用于介質單向流動的管道上，只允許介質向一個方向流動，以防止發生事故，一般應當水平安裝。

標準編號 標準中文名稱 標準英文名稱 SY/T5215-87 鉆具止回閥 GB/T12235-1989 通用閥門法蘭連接鋼制截止閥和升降式止回閥 General purpose industrial valves?Flanged steel globe valveslift check valves GGB/T1241-1983 船用外螺紋鍛鋼截止止回閥 Marine forged steel male thread stopcheck valves GB/T12233-1989 通用閥門鐵制截止閥與升降式止回閥 General purpose industrial valves?Casting iron globe valveslift check valves GB/T12236-1989 通用閥門鋼制旋啟式止回閥 General purpose industrial valves?Steel swing check valves GB/T13932-1992 通用閥門鐵制旋啟式止回閥 General purpose industrial valves--Cast iron swing check valves GB/T18691-2002 農業灌溉設備止回閥 Agricultural irrigation equipment--Check valves GB/T1952-1980 船用低壓外螺紋青銅止回閥 Low bressure bronze male screw-thread check valve for marine use GB/T597-1983 船用外螺紋青銅止回閥 Marine bronze male thread lift check valves GB/T592-1993 船用法蘭鑄鐵止回閥 Marine cast iron flanged lift check valves GB/T591-1993 船用法蘭鑄鐵截止止回閥 Marine cast iron flanged stop check valves GB/T586-1999 船用法蘭鑄鋼止回閥 Marine cast steel flanged check valves GB/T588-1993 船用法蘭青銅截止止回閥 Marine bronze flanged stop check valves GB/T589-1993 船用法蘭青銅止回閥 Marine bronze flanged check valves GB/T596-1983 船用外螺紋青銅截止止回閥 Marine bronze male thread stopcheck valves GB/T585-1999 船用法蘭鑄鋼截止止回閥 Marine cast steel flanged stop check valves GB/T1953-1984 船用低壓外螺紋青銅截止止回閥 Marine low pressure bronze male threaded stop check valves JB/T8937-1999 對夾式止回閥 JB/T1736-19912005 復審 旋啟式止回閥閥瓣密封圈 JB/T1737-19912005 復審 旋啟式止回閥閥瓣密封圈壓板 JB/T53036-1999 止回閥 產品質量分等 NF E29-350-2003 工業用閥.鋼制球閥、球狀截止閥和止回閥 Industrial valves - Steel globeglobe stopcheck valves NF E29-316-3-2000 供水用閥門.適用性要求和專用檢查試驗. 第3部分:止回閥 Valves for water supply - Fitness for purpose requirementsappropriate verification tests - Part 3 : check valves. NF P43-017-1989 建筑物水管閥門.帶法蘭可調EA止回閥.一般技術規范 VALVES AND TAPS FOR WATER SUPPLY IN BULDINGS. CONTROLLABLE CHECK VALVES EA,WITH FLANGES. GENERAL TECHNICAL SPECIFICATIONS. NF E29-373-1984 工業閥門.止回閥.鋼制，單搖板式，帶法蘭盤,ISO標準壓力16，20，25，40，50，100 Industrial valves. Flanged steel swing check valves. ISO PN A6, ISO PN 20, ISO PN 25, ISO PN 40, ISO PN 50, ISO PN 100. NF P43-007-1985 建筑物水管閥門.A級控制非止回閥.一般技術規范 Valvestaps for water supply in buildings. Controllable check valves class A. General technical specifications NF S62-143-2001 固定的消防系統.氣體滅火系統用元件. 第13部分:止回閥的要求和試驗方法 Fixed firefighting systems - Components for gas extinguishing systems - Part 13 : requirementstest methods for check valvesnon-return valves NF E29-335-2003 石油和天然氣工業用尺寸為DN 100及更小的鋼閘閥、球閥和止回閥 Steel gate, globecheck valves for sizes DN 100smaller, for the petroleumnatural gas industries NF E29-372-2001 工業閥門.鑄鐵止回閥 Industrial valves - Cast iron check valves 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 valvescheck valves - Mounting surfaces. ANSI/ASSE 1024-1998 雙重止回閥型防回流裝置 Dual Check Valve Type Backflow Preventers ANSI/FCI 74-1-1990 彈簧加載升降隔膜止回閥 Valves, Spring Loaded Lift Disc Check ANSI/AWWA C 508-2001 2in50mm-24in600mmNPS 水廠設備用擺動止回閥 Swing-Check Valves for Waterworks Service, 2 in 50 mm through 24 in 600 mm NPS ANSI/UL 312-1996 消防裝置的止回閥 Check Valves for Fire-Protection Service BS EN 13709-2003 工業用閥.鋼制球閥、球狀截止閥和止回閥 Industrial valves - Steel globeglobe stopcheck valves BS EN ISO 15761-2003 石油和天然氣工業用尺寸為DN 100及更小的鋼閘閥、球閥和止回閥 Steel gate, globecheck valves for sizes DN 100smaller, for the petroleumnatural gas industries BS EN 12050-4-2001 建筑物和工地用廢水提升設備.制造和試驗原理.不含糞便和含有糞便的廢水用止回閥 Wastewater lifting plants for buildingssites - Principles of constructiontesting - Non-return valves for faecal-free wastewaterwastewater containing faecal matter 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 valvescheck valves - Mounting surfaces BS EN 1074-3-2000 供水用閥門.目的要求和適當驗收試驗的合理性.止回閥 Valves for water supply - Fitness for purpose requirementsappropriate verification tests - Check valves EN 12334-2001 工業閥門　鑄鐵止回閥　 Industrial valves - Cast iron check valves prEN 13327-1998 工業閥門 熱塑性材料止回閥 Industrial valves - Check valves of thermoplastics materials EN 13709-2002 工業閥門 鋼球和球止回閥 ndustrial valves - Steel globeglobe stopcheck valves EN 12094-13-2001+AC-2002 固定式消防系統　氣體滅火系統的部件 第13部分：對止回閥和非回流閥的要求及試驗方法 Fixed firefighting systems - Components for gas extinguishing systems - Part 13: Requirementstest methods for check valvesnon-return valves BS 7438-1991 彈簧加載型鋼和銅合金單盤壓片止回閥規范 Specification for steelcopper alloy wafer check valves, single-disk, spring-loaded type DIN 5594-1994 有軌車輛用壓縮空氣裝置.雙止回閥.安裝和連接尺寸 Compressed air equipment for rail vehicles - Double check valves - Installationcompanion dimensions DIN 86261-1998 造船用炮銅制可閉鎖帶法蘭DN15至500的止回閥 Non return valves for shipboard use, cutt off type, of gun metall, with flanges, DN 15 to 500 DIN 86252-1998 造船用鑄鐵制可閉鎖帶法蘭DN15至500的止回閥 Non return valves for shipboard use, cutt off type, of cast iron, with flanges, DN 15 to 500 DIN 85003-5-1997 造船用管件的交貨技術條件. 第5部分:截止止回閥 Technical specifications for valves for shipboard use - Part 5: Cutt off type non return valves DIN 5593-1994 有軌車輛用壓縮空氣裝置.止回閥.安裝和連接尺寸 Compressed air equipment for rail vehicles - Check valves - Installationcompanion dimensions DIN 3269-2-1988 地段和建筑物內飲水裝置用管件.止回閥PN10.檢驗 Valves for domestic drinking water installations; check valves PN 10 DIN 3269-1-1988 地段和建筑物內飲水裝置用管件.止回閥PN10.要求 Valves for domestic drinking water installations; check valves PN 10; requirements DIN 87101-1975 垂直型.公稱寬度50-150.公稱壓力1.自閉式止回閥.符合公稱壓力的法蘭連接 Non-return flaps storm valves, self-closing, vertical type, nominal diameter 50 up to 150, nominal pressure 1; mating dimensions for flanges according to nominal pressure 10 DIN 3441-5-1984 非增塑聚氯乙烯管件.壓緊止回閥PN6和PN10.尺寸 Unplasticized polyvinyl chloride PVC-U valves; PN 6PN 10 wafer type butterfly valves; dimensions DIN 87104-1975 DIN87101 止回閥用閥插入件 Flap Inserts for Non-return Flaps in accordance with DIN 87101 DIN 3247-1985 無止回閥.帶法蘭的吸濾器 Flanged suction strainers without non-return valve DIN 87106-1975 DIN87101止回閥用定位裝置 Locking Devices for Non-return Flaps in accordance with DIN 87101 DIN 3259-1985 帶止回閥的法蘭吸濾器腳閥 Flanged suction strainers with non-return valve DIN 477-4-1982 氣瓶閥.輕便儲氣瓶頸的止回閥 Compressed gas cylinder valves; swing check valves for camping-cylinders 3 M3 K0 DIN 3538-1986 煤氣裝置管件.止回閥.內螺紋接頭 Valves for gas installations; butterfly valves; female threaded ends DIN 3248-1985 無止回閥.帶內螺紋連接的吸濾器 Threaded suction strainers without non-return valve DIN 3249-1985 帶止回閥.內螺紋連接的吸濾器腳閥 Threaded suction strainers with non-return valve DIN EN 1074-3-2000 供水用閥門.適用性要求和專用檢查試驗. 第3部分:止回閥 V alves for water supply - Fitness for purpose requirementsappropriate verification tests - Part 3: Check valves; German version EN 1074-3:2000 DIN 74280-1998 空氣制動系統.止回閥 Air braking systems - Check valve DIN EN 13709-2003 工業用閥.鋼制球閥、球狀截止閥和止回閥 Industrial valves - Steel globeglobe stopcheck valves; German version DIN 3845-1981 暖氣管件.帶套管接頭的銅合金制PN16止回閥.尺寸.材料 Valves for heating installations - Copper alloy check valves PN 16 with screwed sockets - Dimensions, materials DIN EN 12094-13-2001 固定式消防系統.氣體滅火系統用元件. 第13部分:止回閥和非止回閥的要求和試驗方法 Fixed firefighting systems - Components for gas extinguishing systems - Part 13: Requirementstest methods for check valvesnon-return valves; German version EN 12094-13:2001 DIN 86066-2002 止回閥用鑄鋼焊入式彎頭.DN50至150,PN10的法蘭接合 Cast steel welding elbows for storm valves - DN 50 to 150, connecting dimensions according to PN 10 DIN 58362-7-2002 輸液.輸液器和附件. 第7部分:止回 閥 Infusion - Infusion equipmentaccessories - Part 7: Check valves DIN EN ISO 15761-2003 石油和天然氣工業用規格為DN100及更小的鋼閘閥、球閥和止回閥 Steel gate, globcheck valves for sizes DN 100smaller, for the petroleumnatural gas industries ISO 15761:2002; German version EN ISO 15761:2002 GermanEnglish text DIN 87107-1975 DIN87101 止回閥用扁墊圈 Gaskets for Non-return Flaps in accordance with DIN 87101 DIN 87103-1975 DIN87101 止回閥的罩蓋 Covers for Non-return Flaps in accordance with DIN 87101 DIN 87102-1975 DIN87101 止回閥的外殼 Casings for Non-return Flaps in accordance with DIN 87101 DIN 87105-1975 DIN87101 止回閥用帶凸肩的閉鎖螺釘 Screw Plugs with Cylindrical Extension for Non-return Flaps in accordance with DIN 87101 DL/T923-2005 火力發電用止回閥技術條件 GB/T1855-1993 船用法蘭鑄鐵單排吸入截止止回閥箱 Marine flanged cast iron single arrangement suctio stop check box valve GB/T1853-1994 船用法蘭鑄鋼舷側截止止回閥 Marine flanged cast steel over board stop check valve UL 1469-1995 回流專用止回閥的閥身強度和液壓損失率檢驗 Strength of bodyhydraulic pressure loss testing of backflow special check valves JIS F7372-1996 造船.鑄鐵5K回轉式止回閥 Shipbuilding -- Cast iron 5K swing check valves JIS F3058-1996 鑄鋼立式波浪止回閥 CAST STEEL VERTICAL STORM VALVES JIS F7356-1996 造船.青銅5K升降止回閥 Shipbuilding -- Bronze 5K lift check valves JIS F7373-1996 造船.鑄鐵10K回轉式止回閥 Shipbuilding -- Cast iron 10K swing check valves JIS F7371-1996 造船.青銅5K回轉止回閥 Shipbuilding -- Bronze 5K swing check valves JIS F7495-2000 造船.球墨鑄鐵10K旋壓止回閥 Shipbuilding -- Spheroidal graphite iron ductile iron 10K screw-down check globe valves JIS F3060-1996 鑄鋼旋壓立式波浪止回閥 CAST STEEL SCREWDOWN VERTICAL STORM VALVES 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 valvescheck valves -- Mounting surfaces ISO 9952-1993 農業灌溉設備.止回閥 A gricultural irrigation equipment; check valves ISO 15761-2002 石油和天然氣工業用尺寸為DN 100及更小的鋼閘閥、球閥和止回閥 Steel gate, globecheck valves for sizes DN 100smaller, for the petroleumnatural gas industries ISO 15500-3-2001 道路車輛.壓縮天然氣CNG燃料系統元部件.