{"product_id":"hongsen-cv-direct-flow-refrigeration-check-valves","title":"HONGSEN CV Series Direct-Flow Refrigeration Check Valves","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eHONGSEN CV Series check valves are direct-flow, one-way valves designed for refrigeration, cold-storage and air-conditioning piping systems.\u003c\/p\u003e\n\u003cp\u003eThe valve allows refrigerant to flow in the specified direction while helping prevent reverse flow when the compressor stops or when system pressure conditions change. According to HONGSEN’s official product data, the CV series can be installed in liquid, suction-gas and hot-gas piping.\u003c\/p\u003e\n\u003cp\u003eBoth SAE flare and ODF solder connection versions are available. The internal valve-seat and sealing structure is designed to provide reliable shutoff performance with a low opening-pressure differential.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDirect-flow check-valve design\u003c\/li\u003e\n\u003cli\u003ePrevents reverse refrigerant flow\u003c\/li\u003e\n\u003cli\u003eSuitable for liquid, suction-gas and hot-gas piping\u003c\/li\u003e\n\u003cli\u003eSAE flare and ODF solder connections available\u003c\/li\u003e\n\u003cli\u003eLow minimum opening-pressure differential\u003c\/li\u003e\n\u003cli\u003eReliable valve-seat and sealing performance\u003c\/li\u003e\n\u003cli\u003eSuitable for applicable HCFC and HFC refrigerants\u003c\/li\u003e\n\u003cli\u003eFive connection sizes from 1\/4 to 3\/4 inch\u003c\/li\u003e\n\u003cli\u003eDesigned for refrigeration, cold-storage and air-conditioning systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eItem\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eHONGSEN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eCV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eDirect-Flow Refrigeration Check Valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlow Pattern\u003c\/td\u003e\n\u003ctd\u003eStraight \/ Direct Flow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection Options\u003c\/td\u003e\n\u003ctd\u003eSAE Flare or ODF Solder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplicable Refrigerants\u003c\/td\u003e\n\u003ctd\u003eHCFC and HFC refrigerants\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedium Temperature Range\u003c\/td\u003e\n\u003ctd\u003e−40°C to +120°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Working Pressure\u003c\/td\u003e\n\u003ctd\u003e3.0 MPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Test Pressure\u003c\/td\u003e\n\u003ctd\u003e4.5 MPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Opening Differential\u003c\/td\u003e\n\u003ctd\u003e0.03 MPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eModel Selection\u003c\/h3\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eOfficial Model\u003c\/th\u003e\n\u003cth\u003eSAE Flare\u003c\/th\u003e\n\u003cth\u003eODF Solder\u003c\/th\u003e\n\u003cth\u003eInternal Diameter\u003c\/th\u003e\n\u003cth\u003eKv\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCV-6\u003c\/td\u003e\n\u003ctd\u003e1\/4 SAE\u003c\/td\u003e\n\u003ctd\u003e1\/4 ODF\u003c\/td\u003e\n\u003ctd\u003e4.8 mm\u003c\/td\u003e\n\u003ctd\u003e0.56 m³\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCV-10\u003c\/td\u003e\n\u003ctd\u003e3\/8 SAE\u003c\/td\u003e\n\u003ctd\u003e3\/8 ODF\u003c\/td\u003e\n\u003ctd\u003e8 mm\u003c\/td\u003e\n\u003ctd\u003e1.43 m³\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCV-12\u003c\/td\u003e\n\u003ctd\u003e1\/2 SAE\u003c\/td\u003e\n\u003ctd\u003e1\/2 ODF\u003c\/td\u003e\n\u003ctd\u003e10 mm\u003c\/td\u003e\n\u003ctd\u003e2.05 m³\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCV-16\u003c\/td\u003e\n\u003ctd\u003e5\/8 SAE\u003c\/td\u003e\n\u003ctd\u003e5\/8 ODF\u003c\/td\u003e\n\u003ctd\u003e13 mm\u003c\/td\u003e\n\u003ctd\u003e3.60 m³\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCV-19\u003c\/td\u003e\n\u003ctd\u003e3\/4 SAE\u003c\/td\u003e\n\u003ctd\u003e3\/4 ODF\u003c\/td\u003e\n\u003ctd\u003e16 mm\u003c\/td\u003e\n\u003ctd\u003e5.50 m³\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cem\u003eKv is the water flow rate in m³\/h at a pressure differential of 100 kPa and a water density of 1 t\/m³.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRefrigeration liquid lines\u003c\/li\u003e\n\u003cli\u003eCompressor suction-gas lines\u003c\/li\u003e\n\u003cli\u003eHot-gas piping\u003c\/li\u003e\n\u003cli\u003eCold-room refrigeration systems\u003c\/li\u003e\n\u003cli\u003eCommercial refrigeration equipment\u003c\/li\u003e\n\u003cli\u003eRefrigerated warehouses\u003c\/li\u003e\n\u003cli\u003eCondensing units\u003c\/li\u003e\n\u003cli\u003eAir-conditioning systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInstall according to the flow-direction arrow marked on the valve body.\u003c\/li\u003e\n\u003cli\u003eSelect the connection size according to the refrigerant pipe diameter.\u003c\/li\u003e\n\u003cli\u003eDo not exceed the stated working pressure or temperature range.\u003c\/li\u003e\n\u003cli\u003eProtect the valve body from excessive heat during brazing.\u003c\/li\u003e\n\u003cli\u003eConfirm refrigerant compatibility and system operating conditions before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HONGSEN","offers":[{"title":"SAE \/ CV-6","offer_id":44053660237883,"sku":null,"price":7.0,"currency_code":"USD","in_stock":true},{"title":"SAE \/ CV-10","offer_id":44053660270651,"sku":null,"price":8.0,"currency_code":"USD","in_stock":true},{"title":"SAE \/ CV-12","offer_id":44053660303419,"sku":null,"price":8.0,"currency_code":"USD","in_stock":true},{"title":"SAE \/ CV-16","offer_id":44053660336187,"sku":null,"price":10.0,"currency_code":"USD","in_stock":true},{"title":"SAE \/ CV-19","offer_id":44053660368955,"sku":null,"price":14.0,"currency_code":"USD","in_stock":true},{"title":"ODF \/ CV-6","offer_id":44053660401723,"sku":null,"price":7.0,"currency_code":"USD","in_stock":true},{"title":"ODF \/ CV-10","offer_id":44053660434491,"sku":null,"price":8.0,"currency_code":"USD","in_stock":true},{"title":"ODF \/ CV-12","offer_id":44053660467259,"sku":null,"price":8.0,"currency_code":"USD","in_stock":true},{"title":"ODF \/ CV-16","offer_id":44053660500027,"sku":null,"price":10.0,"currency_code":"USD","in_stock":true},{"title":"ODF \/ CV-19","offer_id":44053660532795,"sku":null,"price":14.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0683\/8920\/8123\/files\/2026-08-27_164635_802.png?v=1787820430","url":"https:\/\/xiaxuecoldroom.com\/products\/hongsen-cv-direct-flow-refrigeration-check-valves","provider":"XIAXUE Refrigeration","version":"1.0","type":"link"}