Description
The John Guest 3/8" x 3/8" Ball Valve is a high-quality push-fit shut-off valve designed for fast and reliable flow control in drinking water, reverse osmosis (RO), beverage dispensing, and water filtration systems. Featuring 3/8" push-fit connections on both ends, it allows tubing to be connected or disconnected in seconds without the need for tools, making installation and maintenance quick and hassle-free.
Manufactured from durable, food-grade polypropylene with EPDM seals, this valve is suitable for potable water applications and provides dependable quarter-turn operation for positive shut-off.
Key Features
- 3/8" Push-Fit x 3/8" Push-Fit Connections: Compatible with standard 3/8" OD tubing.
- Quarter-Turn Ball Valve: Simple 90° handle rotation provides quick on/off water control.
- Push-Fit Technology: Installs without tools, clamps, or crimping.
- Food-Grade Polypropylene Body: Corrosion-resistant and suitable for potable water systems.
- EPDM O-Ring Seals: Provide a reliable, leak-free seal.
- Reusable Design: Tubing can be disconnected using the collet without damaging the fitting.
- Compact Inline Design: Ideal for installations where space is limited.
Compatibility
The John Guest 3/8" x 3/8" Ball Valve is compatible with:
- Reverse osmosis systems
- Under-sink drinking water systems
- Water filtration systems
- Ice maker water lines
- Refrigerator water lines
- Coffee and espresso machines
- Beverage dispensing equipment
- Water coolers
Compatible with:
- 3/8" OD polyethylene tubing
- 3/8" OD LLDPE tubing
- 3/8" OD copper tubing
- 3/8" OD PEX tubing (where approved by the manufacturer)
Specifications
Product Type – Inline Ball Valve
Connection Size – 3/8" Push-Fit x 3/8" Push-Fit
Connection Type – John Guest Push-Fit
Body Material – Food-Grade Polypropylene
Seal Material – EPDM
Operation – Quarter-Turn Manual Shut-Off
Application – Potable Water
Installation – Tool-Free Push-Fit
Applications
The John Guest 3/8" Ball Valve is ideal for:
- Reverse osmosis system isolation
- Filter replacement shut-off
- Refrigerator water supply lines
- Ice maker installations
- Coffee and beverage equipment
- Water cooler plumbing
- Residential and commercial water filtration systems
It allows users to isolate sections of a water system for maintenance without shutting off the main water supply.
Maintenance
For reliable long-term performance:
- Operate the valve periodically to prevent stiffness.
- Inspect tubing and fittings for leaks during routine maintenance.
- Ensure tubing is cut square and fully inserted into the push-fit connections.
- Replace the valve if the handle becomes damaged or if leaks develop.
- Do not use on compressed air, fuel, or heating systems unless specifically approved for those applications.
💡 John Guest push-fit valves are trusted by water treatment professionals for their quick installation, dependable sealing, and ease of maintenance.
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