{"title":"Check Valves, Single, Double, Swing","description":"\u003cp\u003eCheck Valves, including single, double, and swing variants, are designed to prevent backflow and ensure reliable one-way flow in plumbing, heating, and water systems. By protecting pumps, pipework, and other system components from reverse flow and potential damage, they help maintain system efficiency and safety. Suitable for a wide range of domestic and commercial applications, these durable and dependable valves provide long-lasting performance and are trusted by installers for their reliability and ease of integration into various system designs.\u003c\/p\u003e","products":[{"product_id":"15mm-single-check-valve","title":"15mm Single Check Valve","description":"\u003cp\u003eThis 15mm single check valve (non-return valve) is a compression-fit inline valve designed to prevent backflow and back-siphonage in domestic and commercial plumbing and heating systems. Suitable for fluid category 2 backflow prevention and manufactured to British Standards.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSize: 15mm compression x compression\u003c\/li\u003e\n\u003cli\u003eMaximum temperature: 95°C\u003c\/li\u003e\n\u003cli\u003eMaximum pressure: 16 bar\u003c\/li\u003e\n\u003cli\u003eOpening pressure: 0.5 bar\u003c\/li\u003e\n\u003cli\u003eFlow rate: 3,100 Ltrs\/Hr @ 1 bar\u003c\/li\u003e\n\u003cli\u003eBackflow category: Fluid Category 2\u003c\/li\u003e\n\u003cli\u003eStandard: BS6282\u003c\/li\u003e\n\u003cli\u003eCompression ends: BS EN 1254-2\u003c\/li\u003e\n\u003cli\u003eFemale threads: BS 21\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Primaflow","offers":[{"title":"Default Title","offer_id":50585417679177,"sku":"10015240","price":2.76,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3829\/8185\/files\/15mm-single-check-valve_ea1f544d-8600-4b49-9c77-9b89067c420f.png?v=1775646841"},{"product_id":"reliance-235001-15mm-floguard-single-check-valve","title":"Reliance 235001 15mm Floguard Single Check Valve","description":"\u003cp\u003eThe Reliance Valves Floguard 235001 is a 15mm DZR brass single check valve designed to protect against backflow and back-siphonage contamination risks. WRAS and KIWA REG 4 approved, it is suitable for all Class 2 contamination risks as per the Water Supply (Water Fittings) Regulations 1999.\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003eSize: 15mm F x F\u003c\/li\u003e\n\u003cli\u003eBody: DZR brass\u003c\/li\u003e\n\u003cli\u003eSeals: NBR elastomer\u003c\/li\u003e\n\u003cli\u003eCartridge: Acetal copolymer\u003c\/li\u003e\n\u003cli\u003eSpring: Stainless steel\u003c\/li\u003e\n\u003cli\u003eBackflow category: Fluid Category 2\u003c\/li\u003e\n\u003cli\u003eApprovals: WRAS, KIWA REG 4\u003c\/li\u003e\n\u003cli\u003eCompatible with: Copper pipe only\u003c\/li\u003e\n\u003cli\u003eSuitable for: Hot and cold water systems\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RWC","offers":[{"title":"Default Title","offer_id":50585417777481,"sku":"FLOW235001","price":12.24,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3829\/8185\/files\/image_1052fb06-91d9-4a8b-b84e-1af1a38aad9e.png?v=1776263231"},{"product_id":"22-mm-single-check-valve","title":"22 mm Single check valve","description":"\u003cp\u003eThis 22mm single check valve (non-return valve) is a compression-fit inline valve designed to prevent backflow and back-siphonage in domestic and commercial plumbing and heating systems. Suitable for fluid category 2 backflow prevention and manufactured to British Standards.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e22mm Single Check Valve\u003c\/li\u003e\n\u003cli\u003eSize: 22mm compression x compression\u003c\/li\u003e\n\u003cli\u003eMaximum temperature: 95°C\u003c\/li\u003e\n\u003cli\u003eMaximum pressure: 16 bar\u003c\/li\u003e\n\u003cli\u003eOpening pressure: 0.5 bar\u003c\/li\u003e\n\u003cli\u003eFlow rate: 7,000 Ltrs\/Hr @ 0.5 bar\u003c\/li\u003e\n\u003cli\u003eBackflow category: Fluid Category 2\u003c\/li\u003e\n\u003cli\u003eStandard: BS6282\u003c\/li\u003e\n\u003cli\u003eCompression ends: BS EN 1254-2\u003c\/li\u003e\n\u003cli\u003eFemale threads: BS 21\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Primaflow","offers":[{"title":"Default Title","offer_id":50585417974089,"sku":"10015257","price":5.16,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3829\/8185\/files\/22mm-single-check-valve_3265df8c-ef1a-4724-808f-f63686d1e1c4.png?v=1776175601"},{"product_id":"28-mm-single-check-valve","title":"28 mm Single check valve","description":"\u003cp\u003eThis 28mm single check valve (non-return valve) is a compression-fit inline valve with drain, designed to prevent backflow and back-siphonage in plumbing and heating systems.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSize: 28mm compression x compression\u003c\/li\u003e\n\u003cli\u003eMaximum temperature: 110°C\u003c\/li\u003e\n\u003cli\u003eMaximum pressure: 16 bar\u003c\/li\u003e\n\u003cli\u003eOpening pressure: 0.02 bar\u003c\/li\u003e\n\u003cli\u003eDimensions: H 29mm, L 89mm, D 28.3mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Primaflow","offers":[{"title":"Default Title","offer_id":50585418039625,"sku":"10015274","price":11.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3829\/8185\/files\/image_c098fa69-e5d7-4a66-b5cd-5b85e2f60549.png?v=1776333211"},{"product_id":"1-2-f-x-f-brass-single-check-valve","title":"1\/2\" f x f Brass Single check valve 110 °C","description":"\u003cp\u003eThis 1\/2\" brass single check valve (non-return valve) is a spring-loaded inline valve with soft seating and stainless steel spring, designed to prevent backflow and back-siphonage in plumbing and heating systems up to 110°C.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSize: 1\/2\" F BSP x F BSP\u003c\/li\u003e\n\u003cli\u003eMaximum pressure: 16 bar\u003c\/li\u003e\n\u003cli\u003eOpening pressure: 0.02 bar\u003c\/li\u003e\n\u003cli\u003eMaximum working temperature: 110°C\u003c\/li\u003e\n\u003cli\u003eDimensions: D 30mm, L 48mm, G 1\/2\"\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Barberi","offers":[{"title":"Default Title","offer_id":50585418105161,"sku":"BA300040","price":4.43,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3829\/8185\/files\/half_inch_single_check_edited.png?v=1791984670"},{"product_id":"3-4-f-x-f-brass-single-check-valve","title":"3\/4\" f x f Brass Single check valve","description":"\u003cp\u003eThis 3\/4\" brass single check valve (non-return valve) is a spring-loaded inline valve with soft seating and stainless steel spring, designed to prevent backflow and back-siphonage in plumbing and heating systems up to 110°C.\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003eSize: 3\/4\" F BSP x F BSP\u003c\/li\u003e\n\u003cli\u003eMaximum pressure: 16 bar\u003c\/li\u003e\n\u003cli\u003eOpening pressure: 0.02 bar\u003c\/li\u003e\n\u003cli\u003eMaximum working temperature: 110°C\u003c\/li\u003e\n\u003cli\u003eDimensions: D 37mm, L 53mm, G 3\/4\"\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Barberi","offers":[{"title":"Default Title","offer_id":50585418170697,"sku":"10015376","price":6.6,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3829\/8185\/files\/three_quarter_single_check_edited.png?v=1791984739"},{"product_id":"3-4-f-x-f-nickel-pltd-single-check-valve","title":"3\/4\" f x f Nickel Plated Single check valve","description":"\u003cp\u003eThis 3\/4\" nickel plated single check valve (non-return valve) is a spring-loaded inline valve with soft seating and stainless steel spring, designed to prevent backflow and back-siphonage in plumbing and heating systems up to 110°C.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSize: 3\/4\" F BSP x F BSP\u003c\/li\u003e\n\u003cli\u003eFinish: Nickel plated\u003c\/li\u003e\n\u003cli\u003eMaximum pressure: 16 bar\u003c\/li\u003e\n\u003cli\u003eOpening pressure: 0.02 bar\u003c\/li\u003e\n\u003cli\u003eMaximum working temperature: 110°C\u003c\/li\u003e\n\u003cli\u003eDimensions: D 37mm, L 53mm, G 3\/4\"\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Barberi","offers":[{"title":"Default Title","offer_id":50585418924361,"sku":"005020N00","price":6.96,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3829\/8185\/files\/image_a4421235-e12a-45ff-8252-38a13c3db129.png?v=1776502742"},{"product_id":"1-f-x-f-single-check-valve","title":"1\" f x f Single check valve","description":"\u003cp\u003eThis 1\" brass single check valve (non-return valve) is a spring-loaded inline valve with soft seating and stainless steel spring, designed to prevent backflow and back-siphonage in plumbing and heating systems up to 110°C.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSize: 1\" F BSP x F BSP\u003c\/li\u003e\n\u003cli\u003eMaximum pressure: 16 bar\u003c\/li\u003e\n\u003cli\u003eOpening pressure: 0.02 bar\u003c\/li\u003e\n\u003cli\u003eMaximum working temperature: 110°C\u003c\/li\u003e\n\u003cli\u003eDimensions: D 44mm, L 59mm, G 1\"\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Barberi","offers":[{"title":"Default Title","offer_id":50585418989897,"sku":"BA-300060","price":9.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3829\/8185\/files\/1_-BSP-Brass-Single-Check-Valve-110_C-Non-Return---Spatec-NI-edited.png?v=1790773212"},{"product_id":"1-f-x-f-nickel-plated-single-check-valve","title":"1\" f x f Nickel Plated Single check valve","description":"\u003cp\u003eThis 1\" nickel plated single check valve (non-return valve) is a spring-loaded inline valve with soft seating and stainless steel spring, designed to prevent backflow and back-siphonage in plumbing and heating systems up to 110°C.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSize: 1\" F BSP x F BSP\u003c\/li\u003e\n\u003cli\u003eFinish: Nickel plated\u003c\/li\u003e\n\u003cli\u003eMaximum pressure: 16 bar\u003c\/li\u003e\n\u003cli\u003eOpening pressure: 0.02 bar\u003c\/li\u003e\n\u003cli\u003eMaximum working temperature: 110°C\u003c\/li\u003e\n\u003cli\u003eDimensions: D 44mm, L 59mm, G 1\"\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Barberi","offers":[{"title":"Default Title","offer_id":50585419055433,"sku":"005025N00","price":10.74,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3829\/8185\/files\/image_3c577848-3368-4f0d-8cdc-6ca6aab327cc.png?v=1776502647"},{"product_id":"1-1-4-f-x-f-nickel-pltd-single-check-valve","title":"1 1\/4\" f x f Nickel Plated Single check valve","description":"\u003cp\u003eThis 1 1\/4\" nickel plated single check valve (non-return valve) is a spring-loaded inline valve with soft seating and stainless steel spring, designed to prevent backflow and back-siphonage in plumbing and heating systems up to 110°C.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSize: 1 1\/4\" F BSP x F BSP\u003c\/li\u003e\n\u003cli\u003eFinish: Nickel plated\u003c\/li\u003e\n\u003cli\u003eMaximum pressure: 10 bar\u003c\/li\u003e\n\u003cli\u003eOpening pressure: 0.02 bar\u003c\/li\u003e\n\u003cli\u003eMaximum working temperature: 110°C\u003c\/li\u003e\n\u003cli\u003eDimensions: D 56mm, L 66mm, G 1 1\/4\"\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Barberi","offers":[{"title":"Default Title","offer_id":50585419579721,"sku":"005032N00","price":17.88,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3829\/8185\/files\/image_0dc93c08-12c1-4c35-abfc-e957c855f381.png?v=1776502756"},{"product_id":"1-1-2-f-x-f-brass-single-check-valve","title":"1 1\/2\" f x f Brass Single check\/Non Return valve","description":"\u003cp\u003eThis 1 1\/2\" brass single check valve (non-return valve) is a spring-loaded inline valve with soft seating and stainless steel spring, designed to prevent backflow and back-siphonage in plumbing and heating systems up to 110°C.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSize: 1 1\/2\" F BSP x F BSP\u003c\/li\u003e\n\u003cli\u003eMaximum pressure: 10 bar\u003c\/li\u003e\n\u003cli\u003eOpening pressure: 0.02 bar\u003c\/li\u003e\n\u003cli\u003eMaximum working temperature: 110°C\u003c\/li\u003e\n\u003cli\u003eDimensions: H 63mm, L 71mm, G 1 1\/2\"\u003c\/li\u003e\n\u003cli\u003eApplication: Backflow and back-siphonage prevention\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Barberi","offers":[{"title":"Default Title","offer_id":50585419678025,"sku":"BA-300080","price":18.01,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3829\/8185\/files\/1-1_2_-BSP-Brass-Single-Check-Valve-110_C---Spatec-NI-edited.png?v=1790773395"},{"product_id":"1-1-2-f-x-f-nickel-pltd-single-check-valve","title":"1 1\/2\" f x f Nickel Plated Single check valve","description":"\u003cp\u003eThis 1 1\/2\" nickel plated single check valve (non-return valve) is a spring-loaded inline valve with soft seating and stainless steel spring, designed to prevent backflow and back-siphonage in plumbing and heating systems up to 110°C.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSize: 1 1\/2\" F BSP x F BSP\u003c\/li\u003e\n\u003cli\u003eFinish: Nickel plated\u003c\/li\u003e\n\u003cli\u003eMaximum pressure: 10 bar\u003c\/li\u003e\n\u003cli\u003eOpening pressure: 0.02 bar\u003c\/li\u003e\n\u003cli\u003eMaximum working temperature: 110°C\u003c\/li\u003e\n\u003cli\u003eDimensions: H 51mm, L 83mm, G 1 1\/2\"\u003c\/li\u003e\n\u003cli\u003eApplication: Backflow and back-siphonage prevention\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Barberi","offers":[{"title":"Default Title","offer_id":50585419710793,"sku":"005040N00","price":26.28,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3829\/8185\/files\/1-bsp-nickel-plated-single-check-valve.png?v=1787578797"},{"product_id":"2-f-x-f-brass-single-check-valve","title":"2\" f x f Brass Single check\/Non Return valve","description":"\u003cp\u003eThis 2\" brass single check valve (non-return valve) is a spring-loaded inline valve with soft seating and stainless steel spring, designed to prevent backflow and back-siphonage in plumbing and heating systems up to 110°C.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSize: 2\" F BSP x F BSP\u003c\/li\u003e\n\u003cli\u003eMaximum pressure: 10 bar\u003c\/li\u003e\n\u003cli\u003eOpening pressure: 0.02 bar\u003c\/li\u003e\n\u003cli\u003eMaximum working temperature: \u003cstrong\u003e110°C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDimensions: H 78mm, L 80mm, G 2\"\u003c\/li\u003e\n\u003cli\u003eApplication: Backflow and back-siphonage prevention\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Barberi","offers":[{"title":"Default Title","offer_id":50585420366153,"sku":"BA-300090","price":28.15,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3829\/8185\/files\/2-brass-single-check-valve-horizontal-side-profile.png?v=1777542463"},{"product_id":"2-1-2-f-x-f-brass-single-check-valve","title":"2 1\/2\" f x f Brass Single check\/Non Return valve","description":"\u003cp\u003eA reliable 2 1\/2\" f x f Brass Single check valve designed for water.\u003c\/p\u003e\n\u003cp\u003e2½\" Brass Single Check Valve\u003c\/p\u003e\n\u003cp\u003eThis 2½\" brass single check valve (non-return valve), Part No: 080065000) features a resilient disc facing and spring assistance for rapid closure, allowing installation in horizontal or vertical pipework with upward flow. Suitable for water, oil, and other industrial services including heating systems.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSize: 2½\" F BSP x F BSP\u003c\/li\u003e\n\u003cli\u003eMaximum pressure: 16 bar\u003c\/li\u003e\n\u003cli\u003eOpening pressure: 0.05 bar\u003c\/li\u003e\n\u003cli\u003eMaximum temperature: 110°C\u003c\/li\u003e\n\u003cli\u003eDimensions: H 67mm, L 116mm\u003c\/li\u003e\n\u003cli\u003eDisc facing: NBR rubber (suitable for water, oil, industrial services)\u003c\/li\u003e\n\u003cli\u003eApplication: Backflow and back-siphonage prevention, heating systems, tanks and reservoirs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Barberi","offers":[{"title":"Default Title","offer_id":50585420431689,"sku":"10015461","price":64.26,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3829\/8185\/files\/2-1-2-brass-single-check-valve-side-profile.png?v=1777542527"},{"product_id":"3-f-x-f-brass-single-check-valve","title":"3\" f x f Brass Single check\/Non Return valve","description":"\u003cp\u003eThis 3\" brass single check valve (non-return valve) features a resilient disc facing and spring assistance for rapid closure, allowing installation in horizontal or vertical pipework with upward flow. Suitable for water, oil, and other industrial services including heating systems.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSize: 3\" F BSP x F BSP (screwed iron)\u003c\/li\u003e\n\u003cli\u003eMaximum working pressure: 10 bar\u003c\/li\u003e\n\u003cli\u003eMaximum working temperature: 110°C\u003c\/li\u003e\n\u003cli\u003eDisc facing: NBR rubber (suitable for water, oil, industrial services)\u003c\/li\u003e\n\u003cli\u003eApplication: Backflow and back-siphonage prevention, heating systems, tanks and reservoirs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Barberi","offers":[{"title":"Default Title","offer_id":50585420464457,"sku":"BA-3000110","price":81.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3829\/8185\/files\/3-bsp-brass-single-check-valve.png?v=1787578406"},{"product_id":"4-f-x-f-brass-single-check-valve","title":"4\" f x f Brass Single check\/Non Return Valve","description":"\u003cp\u003eThis 4\" brass single check valve (non-return valve) features a resilient disc facing and spring assistance for rapid closure, allowing installation in horizontal or vertical pipework with upward flow. Suitable for water, oil, and other industrial services including heating systems.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSize: 4\" F BSP x F BSP (screwed iron)\u003c\/li\u003e\n\u003cli\u003eMaximum working pressure: 10 bar\u003c\/li\u003e\n\u003cli\u003eMaximum working temperature: 110°C\u003c\/li\u003e\n\u003cli\u003eDisc facing: NBR rubber (suitable for water, oil, industrial services)\u003c\/li\u003e\n\u003cli\u003eApplication: Backflow and back-siphonage prevention, heating systems, tanks and reservoirs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Barberi","offers":[{"title":"Default Title","offer_id":50585420529993,"sku":"BA-300120","price":136.1,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3829\/8185\/files\/4_inch_brass-single-check-valve-horizontal-side-profile.png?v=1791984889"},{"product_id":"1-2-brass-swing-flap-check-valve","title":"1\/2\" Brass Horizontal Swing\/Flap Check valve","description":"\u003cp\u003eA reliable 1\/2\" BSP brass swing\/flap check valve designed to prevent backflow and back-siphonage in heating and hot water systems. Suitable for water and glycol solutions up to 30%.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSize: 1\/2\" BSP\u003c\/li\u003e\n\u003cli\u003eInstallation: Horizontal\u003c\/li\u003e\n\u003cli\u003eMaximum pressure: 16 bar\u003c\/li\u003e\n\u003cli\u003eOpening pressure: 0.05 bar\u003c\/li\u003e\n\u003cli\u003eMaximum temperature: 100°C\u003c\/li\u003e\n\u003cli\u003eDimensions: H 32mm, L 47mm\u003c\/li\u003e\n\u003cli\u003eSuitable fluids: Water for thermal systems, glycol solutions (max 30%)\u003c\/li\u003e\n\u003cli\u003eApplication: Backflow and back-siphonage prevention\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003eFemale threaded connections (ISO 228-1) from G 3\/8 to G 6. Rubber (series 060) or metallic seal (series 080). Valve body, plug and obturator in brass (bronze body for sizes G 5 and G 6); seals in NBR. Working temperature range (peaks): -20°C to 110°C; standard working range: 0°C to 95°C. Opening pressure: 0.05 bar. Maximum working pressure: 16 bar (G 3\/8 to G 3), 10 bar (G 4 to G 6). Suitable fluids: water for thermal systems, glycol solutions (max 30%).\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eSwing check valves can be installed in either horizontal or vertical position, respecting the flow direction indicated by the arrow marked on the valve body. In horizontal position, the valve must be installed with the plug towards the top — otherwise the valve will not function correctly. In vertical position, the valve works only when flow comes from the bottom. Assembly onto pipes is done through threaded connections using standard plumbing practice.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Barberi","offers":[{"title":"Default Title","offer_id":50585420824905,"sku":"10015478","price":5.1,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3829\/8185\/files\/1-2-brass-horizontal-swing-flap-check-valve.png?v=1787578223"},{"product_id":"3-4-brass-swing-flap-check-valve","title":"3\/4\" Brass Horizontal Swing\/Flap Check valve","description":"\u003cp\u003eA reliable 3\/4\" BSP brass swing\/flap check valve designed to prevent backflow and back-siphonage in heating and hot water systems. Suitable for water and glycol solutions up to 30%.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eSize: 3\/4\" BSP\u003c\/li\u003e\n\u003cli\u003eInstallation: Horizontal\u003c\/li\u003e\n\u003cli\u003eMaximum pressure: 16 bar\u003c\/li\u003e\n\u003cli\u003eOpening pressure: 0.05 bar\u003c\/li\u003e\n\u003cli\u003eMaximum temperature: 100°C\u003c\/li\u003e\n\u003cli\u003eWorking temperature range: 0–95°C\u003c\/li\u003e\n\u003cli\u003eDimensions: H 35mm, L 54mm\u003c\/li\u003e\n\u003cli\u003eSuitable fluids: Water for thermal systems, glycol solutions (max 30%)\u003c\/li\u003e\n\u003cli\u003eApplication: Backflow and back-siphonage prevention\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003eFemale threaded connections (ISO 228-1) from G 3\/8 to G 6. Rubber (series 060) or metallic seal (series 080). Valve body, plug and obturator in brass (bronze body for sizes G 5 and G 6); seals in NBR. Working temperature range (peaks): -20°C to 110°C; standard working range: 0°C to 95°C. Opening pressure: 0.05 bar. Maximum working pressure: 16 bar (G 3\/8 to G 3), 10 bar (G 4 to G 6). Suitable fluids: water for thermal systems, glycol solutions (max 30%).\u003c\/p\u003e\n\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eSwing check valves can be installed in either horizontal or vertical position, respecting the flow direction indicated by the arrow marked on the valve body. In horizontal position, the valve must be installed with the plug towards the top — otherwise the valve will not function correctly. In vertical position, the valve works only when flow comes from the bottom. Assembly onto pipes is done through threaded connections using standard plumbing practice.\u003c\/p\u003e","brand":"Barberi","offers":[{"title":"Default Title","offer_id":50585420890441,"sku":"10015495","price":8.94,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3829\/8185\/files\/threequarter_inch_swing_check.jpg?v=1786978364"},{"product_id":"1-1-4-brass-swing-flap-check-valve","title":"1 1\/4\" Brass Horizontal Swing\/Flap Check valve","description":"\u003cp\u003eA reliable 1 1\/4\" BSP brass swing\/flap check valve designed to prevent backflow and back-siphonage in heating and hot water systems. Suitable for water and glycol solutions up to 30%.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eSize: 1 1\/4\" F BSP x F BSP\u003c\/li\u003e\n\u003cli\u003eInstallation: Horizontal\u003c\/li\u003e\n\u003cli\u003eMaximum pressure: 16 bar\u003c\/li\u003e\n\u003cli\u003eOpening pressure: 0.05 bar\u003c\/li\u003e\n\u003cli\u003eMaximum temperature: 100°C\u003c\/li\u003e\n\u003cli\u003eDimensions: H 47mm, L 76mm\u003c\/li\u003e\n\u003cli\u003eSuitable fluids: Water for thermal systems, glycol solutions (max 30%)\u003c\/li\u003e\n\u003cli\u003eApplication: Backflow and back-siphonage prevention\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003eFemale threaded connections (ISO 228-1) from G 3\/8 to G 6. Rubber (series 060) or metallic seal (series 080). Valve body, plug and obturator in brass (bronze body for sizes G 5 and G 6); seals in NBR. Working temperature range (peaks): -20°C to 110°C; standard working range: 0°C to 95°C. Opening pressure: 0.05 bar. Maximum working pressure: 16 bar (G 3\/8 to G 3), 10 bar (G 4 to G 6). Suitable fluids: water for thermal systems, glycol solutions (max 30%).\u003c\/p\u003e\n\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eSwing check valves can be installed in either horizontal or vertical position, respecting the flow direction indicated by the arrow marked on the valve body. In horizontal position, the valve must be installed with the plug towards the top — otherwise the valve will not function correctly. In vertical position, the valve works only when flow comes from the bottom. Assembly onto pipes is done through threaded connections using standard plumbing practice.\u003c\/p\u003e","brand":"Barberi","offers":[{"title":"Default Title","offer_id":50585421545801,"sku":"10015529","price":18.6,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3829\/8185\/files\/inch_and_quarter_inch_swing_check.jpg?v=1786978462"},{"product_id":"1-1-2-brass-swing-flap-check-valve","title":"1 1\/2\" Brass Horizontal Swing\/Flap Check valve","description":"\u003cp\u003eA reliable 1 1\/2\" BSP brass swing\/flap check valve designed to prevent backflow and back-siphonage in heating and hot water systems. Suitable for water and glycol solutions up to 30%.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eSize: 1 1\/2\" F BSP x F BSP\u003c\/li\u003e\n\u003cli\u003eInstallation: Horizontal\u003c\/li\u003e\n\u003cli\u003eMaximum pressure: 16 bar\u003c\/li\u003e\n\u003cli\u003eOpening pressure: 0.05 bar\u003c\/li\u003e\n\u003cli\u003eMaximum temperature: 100°C\u003c\/li\u003e\n\u003cli\u003eDimensions: H 51mm, L 83mm, G 1 1\/2\"\u003c\/li\u003e\n\u003cli\u003eSuitable fluids: Water for thermal systems, glycol solutions (max 30%)\u003c\/li\u003e\n\u003cli\u003eApplication: Backflow and back-siphonage prevention\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003eFemale threaded connections (ISO 228-1) from G 3\/8 to G 6. Rubber (series 060) or metallic seal (series 080). Valve body, plug and obturator in brass (bronze body for sizes G 5 and G 6); seals in NBR. Working temperature range (peaks): -20°C to 110°C; standard working range: 0°C to 95°C. Opening pressure: 0.05 bar. Maximum working pressure: 16 bar (G 3\/8 to G 3), 10 bar (G 4 to G 6). Suitable fluids: water for thermal systems, glycol solutions (max 30%).\u003c\/p\u003e\n\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eSwing check valves can be installed in either horizontal or vertical position, respecting the flow direction indicated by the arrow marked on the valve body. In horizontal position, the valve must be installed with the plug towards the top — otherwise the valve will not function correctly. In vertical position, the valve works only when flow comes from the bottom. Assembly onto pipes is done through threaded connections using standard plumbing practice.\u003c\/p\u003e","brand":"Barberi","offers":[{"title":"Default Title","offer_id":50585421611337,"sku":"10015546","price":32.47,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3829\/8185\/files\/10015546.jpg?v=1786978543"},{"product_id":"2-1-2-brass-swing-flap-check-valve","title":"2 1\/2\" Brass Horizontal Swing\/Flap Check valve","description":"\u003cp\u003eA reliable 2 1\/2\" BSP brass swing\/flap check valve designed to prevent backflow and back-siphonage in heating and hot water systems. Suitable for water and glycol solutions up to 30%.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eSize: 2 1\/2\" F BSP x F BSP\u003c\/li\u003e\n\u003cli\u003eInstallation: Horizontal\u003c\/li\u003e\n\u003cli\u003eMaximum pressure: 16 bar\u003c\/li\u003e\n\u003cli\u003eOpening pressure: 0.05 bar\u003c\/li\u003e\n\u003cli\u003eMaximum temperature: 100°C\u003c\/li\u003e\n\u003cli\u003eDimensions: H 67mm, L 116mm\u003c\/li\u003e\n\u003cli\u003eSuitable fluids: Water for thermal systems, glycol solutions (max 30%)\u003c\/li\u003e\n\u003cli\u003eApplication: Backflow and back-siphonage prevention\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003eFemale threaded connections (ISO 228-1) from G 3\/8 to G 6. Rubber (series 060) or metallic seal (series 080). Valve body, plug and obturator in brass (bronze body for sizes G 5 and G 6); seals in NBR. Working temperature range (peaks): -20°C to 110°C; standard working range: 0°C to 95°C. Opening pressure: 0.05 bar. Maximum working pressure: 16 bar (G 3\/8 to G 3), 10 bar (G 4 to G 6). Suitable fluids: water for thermal systems, glycol solutions (max 30%).\u003c\/p\u003e\n\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eSwing check valves can be installed in either horizontal or vertical position, respecting the flow direction indicated by the arrow marked on the valve body. In horizontal position, the valve must be installed with the plug towards the top — otherwise the valve will not function correctly. In vertical position, the valve works only when flow comes from the bottom. Assembly onto pipes is done through threaded connections using standard plumbing practice.\u003c\/p\u003e","brand":"Barberi","offers":[{"title":"Default Title","offer_id":50585421742409,"sku":"080065000","price":64.56,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3829\/8185\/files\/2-1_2_-BSP-Brass-Horizontal-Swing-Check-Valve---Spatec-NI-edited.png?v=1790773770"},{"product_id":"rwc-mini-dzr-brass-double-check-valve-non-return-valve","title":"RWC Flow 230001 15mm DZR brass double check valve (non return valve)","description":"\u003cp\u003eThe RWC Flow 230001 is a WRAS-approved 15mm DZR brass double check valve designed to prevent backflow and back-siphonage contamination in accordance with the Water Supply (Water Fittings) Regulations 1999. Features an integral test point for monitoring the downstream check valve.\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003eSize: 15mm\u003c\/li\u003e\n\u003cli\u003eBody: DZR brass\u003c\/li\u003e\n\u003cli\u003eSeals: EPDM\u003c\/li\u003e\n\u003cli\u003eCheck cartridge: Acetal copolymer\u003c\/li\u003e\n\u003cli\u003eSpring: Stainless steel\u003c\/li\u003e\n\u003cli\u003eWorking pressure: 0.1–16.0 bar\u003c\/li\u003e\n\u003cli\u003eMaximum temperature: 85°C\u003c\/li\u003e\n\u003cli\u003eBackflow category: Class 2\u003c\/li\u003e\n\u003cli\u003eIntegral test point: Yes\u003c\/li\u003e\n\u003cli\u003eApprovals: WRAS\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RWC","offers":[{"title":"Default Title","offer_id":50903612981577,"sku":"FLOW230001","price":12.72,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3829\/8185\/files\/rwc-flow-230001-dzr-brass-15mm-double-check-valve.png?v=1778071479"},{"product_id":"22mm-brass-double-check-valve","title":"22mm DZR Brass Double Check Valve","description":"\u003cp\u003eThis 22mm DZR brass double check valve features two check inserts and an integral test port, providing enhanced backflow prevention for potable water, heating, and booster pump systems. WRAS approved and suitable for universal installation positions.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSize: 22mm compression x compression\u003c\/li\u003e\n\u003cli\u003eBody: Brass EN 12165 CW602N (DZR)\u003c\/li\u003e\n\u003cli\u003eNut: Brass EN 12165 CW617N\u003c\/li\u003e\n\u003cli\u003eOlive: Annealed copper\u003c\/li\u003e\n\u003cli\u003ePlug: Brass EN 12164 CW602N (DZR)\u003c\/li\u003e\n\u003cli\u003eInsert: POM + NBR\u003c\/li\u003e\n\u003cli\u003eLocking ring: Phosphorous bronze\u003c\/li\u003e\n\u003cli\u003eWorking temperature range: 0–95°C (peaks to 110°C)\u003c\/li\u003e\n\u003cli\u003eOpening pressure: 0.05 bar\u003c\/li\u003e\n\u003cli\u003eMaximum working pressure: 16 bar\u003c\/li\u003e\n\u003cli\u003eSuitable fluids: Potable water, thermal systems, glycol solutions (max 30%)\u003c\/li\u003e\n\u003cli\u003eConnections: Compression ends EN 1254-2, threaded ISO 228-1\u003c\/li\u003e\n\u003cli\u003eApprovals: WRAS\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Barberi","offers":[{"title":"Default Title","offer_id":52035859022153,"sku":"10015019","price":8.22,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3829\/8185\/files\/22mm-dzr-brass-double-check-valve.png?v=1778071556"},{"product_id":"15mm-brass-double-check-valve","title":"15mm DZR Brass Double Check Valve 10015002","description":"\u003cp\u003eThis 15mm DZR brass double check valve features two check inserts and an integral test port, providing enhanced backflow prevention for potable water, heating, and booster pump systems. Suitable for universal installation positions.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSize: 15mm compression x compression\u003c\/li\u003e\n\u003cli\u003eBody: Brass DZR\u003c\/li\u003e\n\u003cli\u003eWorking temperature range: 0–95°C (peaks to 110°C)\u003c\/li\u003e\n\u003cli\u003eOpening pressure: 0.05 bar\u003c\/li\u003e\n\u003cli\u003eMaximum working pressure: 16 bar\u003c\/li\u003e\n\u003cli\u003eSuitable fluids: Potable water, thermal systems, glycol solutions (max 30%)\u003c\/li\u003e\n\u003cli\u003eConnections: Compression ends EN 1254-2, threaded ISO 228-1\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Primaflow","offers":[{"title":"Default Title","offer_id":52035891626313,"sku":"10015002","price":4.86,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3829\/8185\/files\/15mm-dzr-brass-double-check-valve_521f92d8-4dcd-4ca0-b7d7-c7a205e0e3bd.png?v=1787145366"},{"product_id":"rmc-nr75-3-4-check-valve-and-strainer","title":"Reliance RMC NR75 3\/4\" Check Valve and Strainer","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eRMC NR75 Check Valve and Strainer – 3\/4\"\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Reliance RMC NR75 combined check valve and strainer assembly is designed to help prevent reverse water flow and protect downstream plumbing components by filtering debris from the water supply. The non-return valve allows water to flow in one direction while restricting backflow, helping maintain system reliability and protect connected equipment. Suitable for plumbing and water-heating applications, subject to the manufacturer's operating specifications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOverall length: 80mm\u003c\/span\u003e\u003c\/p\u003e","brand":"RWC","offers":[{"title":"Default Title","offer_id":55606502588745,"sku":"NR75","price":15.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3829\/8185\/files\/nr75.png?v=1791988880"},{"product_id":"rmc-nr50s-combined-non-return-isolating-valve","title":"Reliance RMC NR50S 15mm F Combined Non Return Isolating Valve","description":"\u003cp\u003eNR50S 15mm F BSP Non return valve with strainer\u003c\/p\u003e\n\u003cp\u003eThe combination non return isolating valve combines the mandatory functions of an isolating valve and non return valve for the installation of pressurised water heaters.  Serving the purpose of protecting the mains supply from contamination and preventing the loss of water that has already been heated,\u003c\/p\u003e\n\u003cp\u003eOne piece unit for tidy, simple and economical installation\u003c\/p\u003e\n\u003cp\u003eNo Intermediate joins or fittings, reducing the opportunity for leak and faults.\u003c\/p\u003e\n\u003cp\u003eTamper-proof non return valve\u003c\/p\u003e\n\u003cp\u003eDimensions: width (w) 95 x height (H) 47\u003c\/p\u003e\n\u003cp\u003eDezincification resistant\u003c\/p\u003e\n\u003cp\u003eMaterial: DZR brass\u003c\/p\u003e\n\u003cp\u003eConnection: DN15 Female\u003c\/p\u003e\n\u003cp\u003eMax temp: 40 °C \u003c\/p\u003e\n\u003cp\u003eMax Inlet Pressure:  1400kPa\u003c\/p\u003e","brand":"RWC","offers":[{"title":"Default Title","offer_id":55622691389769,"sku":"NR50S","price":18.2,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3829\/8185\/files\/nr50s_edited_front.png?v=1792074105"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3829\/8185\/collections\/1_-f-x-f-brass-single-check-valve-110-c_d106c060-5739-4c3d-a851-e91a771e4c6c.png?v=1776173520","url":"https:\/\/spatec.co.uk\/collections\/check-valves-single-double-swing.oembed?page=4","provider":"Spatec NI Ltd","version":"1.0","type":"link"}