Watts AquaLock - Large Diameter Reducing Stop Valve
Watts AquaLock Large Diameter Reducing Stop Valve
Push-to-connect flow control for versatile plumbing connections across copper, PEX, CPVC, and polyethylene tubing systems
The Watts AquaLock reducing stop valve delivers reliable shutoff control for water filtration systems and plumbing installations requiring diameter reduction. Compatible with copper, CPVC, PEX, LDPE, MDPE, HDPE, and polypropylene tubing, this push-to-connect fitting eliminates the need for soldering or threading while maintaining secure, leak-free connections under pressure.
Engineered for Multi-Material Compatibility
Push-to-Connect Design
Tool-free installation with instant connection to multiple tubing types, reducing installation time and eliminating need for torches or thread sealant
Reducing Configuration
Transitions between different tube diameters in a single fitting, simplifying system design and reducing component count
Universal Tube Support
Accepts copper CTS, PEX, CPVC, and all grades of polyethylene tubing (LDPE, MDPE, HDPE) plus polypropylene for maximum flexibility
Positive Shutoff Control
Reliable stop valve function for service, maintenance, or emergency isolation without disrupting permanent connections
Tubing Size Reference
The Watts AquaLock reducing stop valve supports the following size transitions: 3/8" OD to 1/4" CTS, 1/2" OD to 3/8" CTS, 5/8" OD to 1/2" CTS, 7/8" OD to 3/4" CTS, and 1-1/8" OD to 1" CTS. CTS (Copper Tube Size) refers to inside diameter, while OD refers to outside diameter of polypropylene and polyethylene tubing. Suitable for reverse osmosis systems, whole-house filtration, ice makers, refrigerator lines, and general plumbing where diameter reduction and shutoff control are required.
Watts Water Technologies has been manufacturing reliable plumbing components for professional and residential applications for decades, trusted by installers who demand performance without compromise.
