{"product_id":"stainless-steel-female-thread-check-valve-cv-1-8-1-4-3-8-1-2-bsp-one-way-inline-non-return-pneumatic-valve-for-air-water-oil","title":"Stainless Steel Female Thread Check Valve, 1\/8 to 1\/2 BSP","description":"\u003cp\u003eAir lines that bleed back through a compressor waste time and weaken the next tool. A stainless steel female thread check valve helps keep flow in one direction, so a compressor, pump or oil circuit holds its line. CV series, 1\/8 to 1\/2 inch BSP threads. For air, water and oil systems.\u003c\/p\u003e\u003ch2\u003eOne-way flow for air, water and oil lines\u003c\/h2\u003e\u003cp style=\"margin:0 0 6px 0\"\u003e✅ \u003cstrong\u003eBlocks backflow\u003c\/strong\u003e The one-way inline design keeps air, water and oil moving forward instead of returning through the line.\u003c\/p\u003e\u003cp style=\"margin:0 0 6px 0\"\u003e✅ \u003cstrong\u003eStainless steel body\u003c\/strong\u003e The valve body is stainless steel, chosen for service life in air, water and oil lines.\u003c\/p\u003e\u003cp style=\"margin:0 0 6px 0\"\u003e✅ \u003cstrong\u003eFour thread sizes\u003c\/strong\u003e Pick 1\/8, 1\/4, 3\/8 or 1\/2 inch female thread to match the port you are repairing.\u003c\/p\u003e\u003cp style=\"margin:0 0 6px 0\"\u003e✅ \u003cstrong\u003eCompact CV body\u003c\/strong\u003e The compact CV body fits into tight pipe runs where a bulkier valve would need more room.\u003c\/p\u003e\u003cp style=\"margin:0 0 6px 0\"\u003e✅ \u003cstrong\u003eInline swap\u003c\/strong\u003e Female threads let you change a tired valve during routine maintenance without reworking the whole line.\u003c\/p\u003e\u003cp\u003eMost failures show up as a symptom rather than a broken valve: a compressor that has to run again before the next tool, a pump that cycles with nothing open, or oil creeping back into a line that should be empty. Fitting the valve where the flow must stay one-way deals with the symptom at the point where it starts.\u003c\/p\u003e\u003cp\u003eThread size is the decision to make before ordering. Measure the male port the valve screws into and match it to one of the four BSP sizes here. A wrong thread cannot be rescued by tightening harder, so check it with a thread gauge if the port is old or has been retapped.\u003c\/p\u003e\u003cp\u003eAir, water and oil are the media named for this valve. It carries no stated pressure or temperature rating, so it is not sold here for steam, gas or drinking-water systems where a rated component is required.\u003c\/p\u003e\u003cp\u003eCompared with a ball valve there is no handle and nothing to turn, because the valve works on flow direction alone. That is what makes the CV series useful where a line has to stay one-way when nobody is watching it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTechnical details\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eType: CV series inline non-return check valve\u003c\/li\u003e\n\u003cli\u003eModel: CV-01\u003c\/li\u003e\n\u003cli\u003eBody material: Stainless steel\u003c\/li\u003e\n\u003cli\u003eConnection: Female thread, inline\u003c\/li\u003e\n\u003cli\u003eThread sizes: 1\/8, 1\/4, 3\/8 and 1\/2 inch (BSP)\u003c\/li\u003e\n\u003cli\u003eWorking media: Air, water, oil and compatible fluids\u003c\/li\u003e\n\u003cli\u003eFlow: One-way, non-return\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg cke-id=\"img44\" referrerpolicy=\"no-referrer\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S9edd0bfff25e4e208911af0e847d08c0O.jpg?width=950\u0026amp;height=1253\u0026amp;hash=2203\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg cke-id=\"img45\" referrerpolicy=\"no-referrer\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sf92ed3fd2f19436085223bd015e6c76eB.jpg?width=950\u0026amp;height=1213\u0026amp;hash=2163\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg cke-id=\"img46\" referrerpolicy=\"no-referrer\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S25c1b61b4ce44cc2b3ef3b18683c8254h.jpg?width=950\u0026amp;height=1272\u0026amp;hash=2222\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg cke-id=\"img47\" referrerpolicy=\"no-referrer\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S582b24d7309947e69aefe9768dd28a24I.jpg?width=950\u0026amp;height=1150\u0026amp;hash=2100\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg cke-id=\"img48\" referrerpolicy=\"no-referrer\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S2481ace35fc54d3792ce4945171badb3b.jpg?width=950\u0026amp;height=1283\u0026amp;hash=2233\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg cke-id=\"img49\" referrerpolicy=\"no-referrer\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S0c7e7e8e898b435fb37087e9f5b1fd8br.jpg?width=950\u0026amp;height=1284\u0026amp;hash=2234\"\u003e\u003c\/p\u003e\u003cp\u003ePick the thread that matches your port and keep the line flowing one way.\u003c\/p\u003e\u003cp\u003eSee more: \u003ca href=\"https:\/\/spy-shop.com\/collections\/hardware\"\u003eexplore more hardware and plumbing fittings\u003c\/a\u003e\u003c\/p\u003e","brand":"Spy-shop.com","offers":[{"title":"CV-04","offer_id":64123911864650,"sku":"1005012517452596-CV-04","price":36.3,"currency_code":"EUR","in_stock":true},{"title":"CV-03","offer_id":64123911897418,"sku":"1005012517452596-CV-03","price":27.61,"currency_code":"EUR","in_stock":true},{"title":"CV-02","offer_id":64123911930186,"sku":"1005012517452596-CV-02","price":22.87,"currency_code":"EUR","in_stock":true},{"title":"CV-01","offer_id":64123911962954,"sku":"1005012517452596-CV-01","price":21.29,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0764\/5980\/2954\/files\/S3405ddc647c44d43b1fb08346e472781U.webp?v=1793354363","url":"https:\/\/spy-shop.com\/el\/products\/stainless-steel-female-thread-check-valve-cv-1-8-1-4-3-8-1-2-bsp-one-way-inline-non-return-pneumatic-valve-for-air-water-oil","provider":"Spy-shop.com","version":"1.0","type":"link"}