John Guest PSEI0220E ProLock 1/2" CTS Push-to-Connect Tee – Plastic Quick Connect Fitting for Copper Tube, Plumbing & Water Softeners, Black

John Guest ProLock 1/2" CTS ( Copper Tube Size) Push-to-Connect Tee – Quick Connect Plumbing Fitting

PART# PSEI0220E 

Make plumbing connections faster and easier with the John Guest ProLock™ 1/2" CTS Push-to-Connect Tee. Built to work with PEX, PE-RT, CPVC, and copper tubing, this versatile tee fitting lets you join pipes in seconds — no solder, glue, or clamps required.

The Twist-to-Lock™ feature adds an extra layer of security, while the stainless steel collet teeth and O-ring seal deliver a strong, leak-proof hold. Whether you’re working on a water softener installation, filtration system, or general plumbing repair, this ProLock fitting provides a reliable, code-approved solution you can trust.

Engineered for both residential and commercial use, ProLock fittings are designed for behind-the-wall installations, tight spaces, and even wet line repairs. Plus, they’re UV-stabilized, making them safe for outdoor applications.

Key Benefits

• Quick & Tool-Free Installation – Push-to-connect design cuts install time by 40%+

• Twist-to-Lock Security – Audible click and visual guide ensure a secure fit

• Multi-Material Compatibility – Works with PEX, PE-RT, CPVC, and copper tubing

• Reliable Performance – Stainless steel teeth and O-ring seal prevent leaks

• Approved for Permanent Use – Safe for behind-the-wall and concealed installations

• Reusable Design – Easily disconnects without damaging tubing

• UV Stabilized – Suitable for outdoor use

Performance Ratings

• 160 PSI @ 73°F

• 100 PSI @ 180°F

• 80 PSI @ 200°F

Ideal Applications

• Water softener and conditioner systems

• Filtration and reverse osmosis setups

• Residential and commercial plumbing repairs

• OEM installations and retrofits