{"product_id":"ro-reverse-osmosis-shut-off-valve-1-4-3-8-water-guard","title":"RO Reverse Osmosis Shut-Off Valve 1\/4\" \u0026 3\/8\" Water Guard","description":"\n\u003ch2\u003eRO Reverse Osmosis Shut-Off Valve – 1\/4\" \u0026amp; 3\/8\" Water Guard\u003c\/h2\u003e\n\u003cp\u003eKeep your reverse osmosis water filtration system running safely and efficiently with this reliable shut-off valve. Designed to automatically stop water flow when your RO storage tank reaches full capacity, this valve helps prevent overflow, reduces filter wear, and extends the life of your entire water purification system.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFood-Safe POM Material:\u003c\/strong\u003e Constructed from non-toxic, food-grade POM (polyoxymethylene) plastic — safe for drinking water systems and beverage equipment.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile Compatibility:\u003c\/strong\u003e Fits standard 1\/4\" and 3\/8\" tubing connections, making it compatible with most home and commercial RO systems, pure water machines, and food \u0026amp; beverage components.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecise Pressure Control:\u003c\/strong\u003e Pre-set pressure of 0.25 ± 0.02 MPa (36 PSI); working pressure range of 7–100 PSI ensures stable, consistent performance across various system setups.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLeak-Proof Design:\u003c\/strong\u003e Acts as a dependable flow guard, shutting off water supply automatically to prevent leaks and unnecessary water waste.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy Installation:\u003c\/strong\u003e Simple push-fit or threaded connection — no special tools required for most RO system setups.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Durable:\u003c\/strong\u003e Lightweight yet robust construction for long-lasting, maintenance-free use in your water filtration system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Food-grade POM (non-toxic)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Size:\u003c\/strong\u003e 1\/4\" – 3\/8\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePre-set Pressure:\u003c\/strong\u003e 0.25 ± 0.02 MPa (36 PSI)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 7–100 PSI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e RO systems, pure water machines, food \u0026amp; beverage water lines\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Made in China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Water Filter Leak-Proof Protector Shut-Off Valve\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eGreat for Home Maintenance\u003c\/h3\u003e\n\u003cp\u003eIf you're setting up or upgrading your home's water filtration system, a proper shut-off valve is a must-have component. Pair it with other handy plumbing and household tools for a complete setup:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pc-400cm-sealing-tape-faucet-sealing-tape-oil-free-leak-proof-water-pipe-gas-pipeline-sealing-tape\"\u003e1PC 400cm Sealing Tape – Leak-Proof Water Pipe \u0026amp; Gas Pipeline Sealing Tape\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pc-multi-use-faucet-bubbler-wrenches-6-sizes-sink-wrenches-detach-tool-for-kitchen-bathroom-faucet-parts-repair-spanner\"\u003e1PC Multi-Use Faucet Bubbler Wrenches – 6 Sizes for Kitchen \u0026amp; Bathroom Repair\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-pc-water-faucet-tap-knob-type-plastic-outdoor-water-faucet-tap-replacement-for-water-tank-bucket-for-wine-bottle-juice-bottle\"\u003e1PC Water Faucet Tap Knob Type – Plastic Outdoor Water Faucet Replacement\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.nutrition.gov\/topics\/shopping-cooking-and-food-safety\" target=\"_blank\" rel=\"noopener\"\u003eNutrition.gov on cooking and food safety\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What size tubing is this RO shut-off valve compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This reverse osmosis shut-off valve is designed to fit both 1\/4\" and 3\/8\" standard tubing connections, making it compatible with the vast majority of home and commercial RO water filtration systems.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this valve safe to use with drinking water systems?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The valve is made from food-grade POM (polyoxymethylene) material, which is non-toxic and specifically suited for use in drinking water, pure water machines, and food \u0026amp; beverage water lines.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the working pressure range for this shut-off valve?\u003c\/h4\u003e\n\u003cp\u003eA: The valve operates within a working pressure range of 7–100 PSI, with a pre-set shut-off pressure of approximately 36 PSI (0.25 ± 0.02 MPa), ensuring reliable automatic shut-off performance for most standard RO system configurations.\u003c\/p\u003e\n\u003ch4\u003eQ: How does a shut-off valve benefit my RO system?\u003c\/h4\u003e\n\u003cp\u003eA: A shut-off valve automatically stops water flow once your RO storage tank is full. This prevents overflow, reduces strain on your filters and membrane, conserves water, and helps extend the overall lifespan of your filtration system.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What size tubing is this RO shut-off valve compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This reverse osmosis shut-off valve is designed to fit both 1\/4\\\" and 3\/8\\\" standard tubing connections, making it compatible with the vast majority of home and commercial RO water filtration systems.\"}}, {\"@type\": \"Question\", \"name\": \"Is this valve safe to use with drinking water systems?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. 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