RO Reverse Osmosis Shut-Off Valve 1/4" & 3/8" Water Guard

RO Reverse Osmosis Shut-Off Valve – 1/4" & 3/8" Water Guard

Keep 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.

Key Features

• Food-Safe POM Material: Constructed from non-toxic, food-grade POM (polyoxymethylene) plastic — safe for drinking water systems and beverage equipment.
• Versatile Compatibility: Fits standard 1/4" and 3/8" tubing connections, making it compatible with most home and commercial RO systems, pure water machines, and food & beverage components.
• Precise Pressure Control: 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.
• Leak-Proof Design: Acts as a dependable flow guard, shutting off water supply automatically to prevent leaks and unnecessary water waste.
• Easy Installation: Simple push-fit or threaded connection — no special tools required for most RO system setups.
• Compact & Durable: Lightweight yet robust construction for long-lasting, maintenance-free use in your water filtration system.

Specifications

• Material: Food-grade POM (non-toxic)
• Connection Size: 1/4" – 3/8"
• Pre-set Pressure: 0.25 ± 0.02 MPa (36 PSI)
• Working Pressure: 7–100 PSI
• Application: RO systems, pure water machines, food & beverage water lines
• Country of Origin: Made in China

What's in the Box?

• 1 × Water Filter Leak-Proof Protector Shut-Off Valve

Great for Home Maintenance

If 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:

• 1PC 400cm Sealing Tape – Leak-Proof Water Pipe & Gas Pipeline Sealing Tape
• 1PC Multi-Use Faucet Bubbler Wrenches – 6 Sizes for Kitchen & Bathroom Repair
• 1PC Water Faucet Tap Knob Type – Plastic Outdoor Water Faucet Replacement

Learn more: Nutrition.gov on cooking and food safety

Frequently Asked Questions

Q: What size tubing is this RO shut-off valve compatible with?

A: 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.

Q: Is this valve safe to use with drinking water systems?

A: 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 & beverage water lines.

Q: What is the working pressure range for this shut-off valve?

A: 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.

Q: How does a shut-off valve benefit my RO system?

A: 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.

Production & Packaging Notice

To 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.