Description
The John Guest Union Connector 3/8" is a high-quality push-fit fitting designed to quickly and securely join two lengths of 3/8" OD tubing in water filtration, reverse osmosis, and drinking water applications. Featuring a tool-free push-fit design, this connector provides a reliable, leak-resistant connection without the need for clamps, glue, or specialized installation tools.
Manufactured from durable, food-grade materials, the John Guest Union Connector is ideal for repairs, extensions, and new installations where a straight inline tubing connection is required.
Key Features
- 3/8" Push-Fit Connection: Connects two pieces of standard 3/8" OD tubing.
- Tool-Free Installation: Simply push tubing into the fitting for a secure connection.
- Leak-Resistant Design: Built-in collet and O-ring system provides a dependable seal.
- Food-Grade Construction: Suitable for potable water applications.
- Reusable Fitting: Tubing can be disconnected and reconnected using the release collet.
- No Tools Required: Saves installation time compared to traditional fittings.
- Compact Design: Ideal for tight spaces and water treatment installations.
Compatibility
The John Guest 3/8" Union Connector is compatible with:
- Reverse osmosis systems
- Drinking water filtration systems
- Water softeners
- Water coolers
- Refrigerator water lines
- Ice maker connections
- Beverage dispensing systems
Compatible with:
- 3/8" OD polyethylene tubing
- 3/8" OD LLDPE tubing
- John Guest and other compatible push-fit tubing systems
Specifications
Product Type – Push-Fit Union Connector
Brand – John Guest
Connection Size – 3/8" OD x 3/8" OD
Fitting Type – Straight Union
Body Material – Food-Grade Acetal Copolymer
Seal Material – EPDM O-Ring
Installation – Push-Fit
Application – Potable Water Systems
Applications
The John Guest Union Connector 3/8" is ideal for:
- Reverse osmosis installations
- Under-sink water filtration systems
- Refrigerator water connections
- Water cooler tubing repairs
- Beverage systems
- Drinking water dispensers
- Filter system upgrades
Common uses include:
- Repairing damaged tubing
- Extending tubing runs
- Connecting two tubing sections
- Simplifying water treatment installations
Installation Instructions
- Cut tubing ends square using a proper tubing cutter.
- Remove any burrs or rough edges.
- Push the tubing firmly into the fitting until it reaches the internal stop.
- Pull back gently to confirm the connection is secure.
- Turn on the water supply and check for leaks.
💡 For best results, always use clean, undamaged tubing and ensure the tubing is fully inserted into the fitting.
Maintenance
For long-lasting performance:
- Inspect fittings periodically for leaks.
- Ensure tubing remains properly supported.
- Replace fittings if damaged or if sealing performance decreases.
- Avoid using fittings with tubing sizes they are not designed for.
Why Choose John Guest Push-Fit Fittings?
John Guest fittings are trusted throughout the water treatment industry for their:
- Fast installation
- Reliable sealing performance
- High-quality materials
- Compatibility with many water filtration systems
- Easy servicing and replacement
The John Guest Union Connector 3/8" is a simple, dependable solution for creating secure inline tubing connections in residential and commercial water applications.
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