AquaLock 3539-10 CTS In-Line Shut-Off Valve Push-to-Connect Fitting

The AquaLock 3539-10 is a CTS (Copper Tube Size) in-line shut-off valve designed for quick, tool-free installation in residential and light commercial plumbing systems. Featuring AquaLock's push-to-connect technology, this valve allows installers to create a secure, leak-free connection simply by inserting compatible tubing into the fitting body — no soldering, clamps, or crimping required.

This in-line valve is ideal for applications where flow control is needed along a run of tubing, providing a convenient way to isolate sections of a plumbing system for maintenance or repairs. The valve's compact inline design makes it well-suited for tight spaces where traditional ball valves or compression fittings may be difficult to access.

Key Features:

• Push-to-connect design — no tools, solder, or clamps required for installation
• CTS (Copper Tube Size) compatible — works with copper, CPVC, and PEX tubing
• In-line configuration for straightforward flow shut-off along tubing runs
• Durable construction suitable for potable water applications
• Compact form factor ideal for installations in confined spaces
• Secure locking mechanism ensures a reliable, leak-free seal

The AquaLock 3539-10 is a practical solution for plumbers and DIY installers seeking fast, dependable connections in water supply lines, fixture supply runs, and similar plumbing applications.