{"product_id":"brass-npt-check-valve-female-thread-inline-one-way-spring-valve-irrigation-aquarium","title":"Brass NPT Check Valve 1\/2\" 3\/4\" 1\" In-Line One-Way Spring Valve","description":"\u003ch2\u003eNPT Brass In-Line Spring Check Valve – One-Way Flow Control for Irrigation \u0026amp; Aquariums\u003c\/h2\u003e\n\u003cp\u003eKeep your water systems flowing in the right direction with this heavy-duty \u003cstrong\u003eBrass Female Thread In-Line Spring Check Valve\u003c\/strong\u003e. Designed for irrigation systems, aquarium setups, plumbing lines, and more, this one-way valve prevents backflow and protects your equipment from reverse pressure. Available in multiple sizes — \u003cstrong\u003e1\/2\", 3\/4\", 1\", 2\" (DN15, DN20, DN25)\u003c\/strong\u003e — to suit a wide range of applications.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Premium brass construction for durability, corrosion resistance, and long service life\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type:\u003c\/strong\u003e NPT\/BSP female thread (1\/8\", 1\/4\", 3\/8\", 1\/2\", 3\/4\", 1\", 2\" available)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Working Temperature:\u003c\/strong\u003e 110°C (230°F)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Pressure:\u003c\/strong\u003e 1.6 MPa (232 PSI)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e In-line spring-loaded one-way valve — allows flow in one direction, automatically blocks reverse flow\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectricity-Free Operation:\u003c\/strong\u003e Fully mechanical — no power source required\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 piece per order\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eGarden drip irrigation and sprinkler systems\u003c\/li\u003e\n  \u003cli\u003eAquarium and fish tank water management\u003c\/li\u003e\n  \u003cli\u003eResidential and commercial plumbing lines\u003c\/li\u003e\n  \u003cli\u003eWater pumps, air compressors, and fluid control systems\u003c\/li\u003e\n  \u003cli\u003eIndustrial and agricultural liquid handling\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBrass\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThread\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNPT\/BSP Female Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable Sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1\/2\", 3\/4\", 1\", 2\" (DN15, DN20, DN25)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e110°C \/ 230°F\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.6 MPa (232 PSI)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eElectricity-Free (Spring Mechanical)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage Contents\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1x Brass Check Valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cp\u003eLooking to expand your garden setup? Check out our \u003ca href=\"\/products\/everything-is-figureoutable-sage-green-quote-canvas-wall-art\"\u003edecorative wall art for your home\u003c\/a\u003e or explore our full range of garden and outdoor solutions to complement your irrigation system.\u003c\/p\u003e\n\n\u003cp\u003eFor guidance on best practices in irrigation and water efficiency, visit the \u003ca href=\"https:\/\/www.epa.gov\/watersense\/watersense-labeled-controllers\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eEPA WaterSense Program\u003c\/a\u003e — a trusted resource for water-efficient products and irrigation tips.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What sizes are available for this brass check valve?\u003c\/h4\u003e\n\u003cp\u003eA: This brass in-line check valve is available in multiple sizes including 1\/2\", 3\/4\", 1\", and 2\" (DN15, DN20, DN25), making it versatile for irrigation systems, aquariums, and standard plumbing connections.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the maximum pressure this check valve can handle?\u003c\/h4\u003e\n\u003cp\u003eA: This brass spring check valve is rated for a maximum working pressure of 1.6 MPa (approximately 232 PSI) and a maximum working temperature of 110°C (230°F), suitable for most residential and light commercial applications.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does this valve require electricity to operate?\u003c\/h4\u003e\n\u003cp\u003eA: No — this is a fully mechanical, spring-loaded one-way check valve. It operates without any electricity, using internal spring tension to automatically allow forward flow and block reverse backflow.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this valve compatible with both irrigation and aquarium systems?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The brass construction and standard NPT\/BSP female thread design make it compatible with a wide range of systems, including garden drip irrigation, aquarium water lines, plumbing networks, and fluid control setups.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What sizes are available for this brass check valve?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This brass in-line check valve is available in multiple sizes including 1\/2\\\", 3\/4\\\", 1\\\", and 2\\\" (DN15, DN20, DN25), making it versatile for irrigation systems, aquariums, and standard plumbing connections.\"}}, {\"@type\": \"Question\", \"name\": \"What is the maximum pressure this check valve can handle?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This brass spring check valve is rated for a maximum working pressure of 1.6 MPa (approximately 232 PSI) and a maximum working temperature of 110°C (230°F), suitable for most residential and light commercial applications.\"}}, {\"@type\": \"Question\", \"name\": \"Does this valve require electricity to operate?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No — this is a fully mechanical, spring-loaded one-way check valve. It operates without any electricity, using internal spring tension to automatically allow forward flow and block reverse backflow.\"}}, {\"@type\": \"Question\", \"name\": \"Is this valve compatible with both irrigation and aquarium systems?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The brass construction and standard NPT\/BSP female thread design make it compatible with a wide range of systems, including garden drip irrigation, aquarium water lines, plumbing networks, and fluid control setups.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/vd0uzy-jp.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Watering \u0026 Irrigation\", \"item\": \"https:\/\/vd0uzy-jp.myshopify.com\/collections\/watering-irrigation\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Brass NPT Check Valve 1\/2\\\" 3\/4\\\" 1\\\" In-Line One-Way Spring Valve\", \"item\": \"https:\/\/vd0uzy-jp.myshopify.com\/products\/brass-npt-check-valve-female-thread-inline-one-way-spring-valve-irrigation-aquarium\"}]}\u003c\/script\u003e","brand":"Peaceful Pleasures Health and Wellness","offers":[{"title":"DN25 G1","offer_id":53658608894265,"sku":"1005009300228581-DN25 G1","price":26.4,"currency_code":"USD","in_stock":true},{"title":"DN20 G3-4","offer_id":53658608927033,"sku":"1005009300228581-DN20 G3-4","price":26.4,"currency_code":"USD","in_stock":true},{"title":"DN15 G1-2","offer_id":53658608959801,"sku":"1005009300228581-DN15 G1-2","price":26.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0933\/3689\/5801\/files\/S7b67e2c1614c46529720510cbb773869o.webp?v=1782832157","url":"https:\/\/peacefulpleasureswellness.com\/products\/brass-npt-check-valve-female-thread-inline-one-way-spring-valve-irrigation-aquarium","provider":"Peaceful Pleasures Health and Wellness","version":"1.0","type":"link"}