Watts AquaLock - Large Diameter 3 Way By-Pass Valve
Large Diameter 3 Way By-Pass Valve
Professional-grade bypass valve for larger diameter water treatment systems. Full flow control with universal AquaLock push-to-connect compatibility across multiple tubing types.
Engineered for Service Flexibility
Tool-Free Installation
AquaLock push-to-connect design eliminates soldering, crimping, or threading. Connect and disconnect in seconds without tools or technical expertise.
Three-Way Bypass Control
Direct system flow between service, bypass, or off positions. Maintain household water supply during filter changes or maintenance without shutting down the line.
Universal Tubing Compatibility
Connects to copper, CPVC, PEX, LDPE, MDPE, HDPE, and polypropylene tubing. One valve works across virtually every residential plumbing material.
Large Diameter Flow
Sized for whole-house or high-demand applications where smaller bypass valves create flow restrictions. Maintains system pressure and volume under load.
Tubing Specifications
AquaLock fittings accept polypropylene tubing in 3/8" OD (1/4" CTS), 1/2" OD (3/8" CTS), 5/8" OD (1/2" CTS), 7/8" OD (3/4" CTS), and 1-1/8" OD (1" CTS). Compatible with NPT pipe threads from 1/4" NPT (0.540" OD) through 2" NPT (2.375" OD). Works with copper tube sizes, IPS, and male garden hose thread connections. Verify your system tubing outer diameter before ordering.
No Leak Risk
Push-to-connect seal eliminates solder joints and threaded connections prone to drips over time
Watts Quality
Manufactured by Watts Water Technologies with decades of plumbing component engineering
Service Without Shutdown
Bypass mode keeps water flowing to your home while you service filters or treatment equipment
