The Watts AquaLock Large Diameter Male Connector delivers tool-free push-to-connect installation for a wide range of tubing types including copper, CPVC, PEX, and all grades of polyethylene. Engineered for leak-free performance in residential and light commercial water filtration systems, this fitting supports multiple tube and thread configurations for maximum versatility.

SPECIFICATIONS

AquaLock Male Connector Details

Manufacturer

Watts Water

AquaLock Series

Connection Type

Male Connector

Push-to-connect

Material

Composite

Corrosion resistant

Installation

Tool-Free

No crimping required

Tubing Compatibility

6 Types

See compatibility chart

Application

Water Filtration

Residential & commercial

TECHNICAL DETAILS

Tubing to Thread Size Reference

Polypropylene Tubing (OD)	3/8", 1/2", 5/8", 7/8", 1-1/8"
Copper Tube Size (ID)	1/4" CTS, 3/8" CTS, 1/2" CTS, 3/4" CTS, 1" CTS
NPT Thread Sizes	1/4", 3/8", 1/2", 3/4", 1", 1-1/4", 1-1/2", 2"
Thread Standard	NPT (National Pipe Tapered)
Connection Method	Push-to-connect insertion, no tools required
Release Mechanism	Integrated collet release for disconnection
Temperature Range	Suitable for cold water applications

COMPATIBILITY & APPLICATIONS

Tubing & System Integration

The Watts AquaLock Large Diameter Male Connector is compatible with copper, CPVC, PEX, LDPE, MDPE, HDPE, and polypropylene tubing, making it ideal for diverse water filtration installations including reverse osmosis systems, whole-house filters, and point-of-use applications. The fitting accepts a wide range of outside diameter tubing and mates to standard NPT male threads, allowing seamless integration with housings, manifolds, tanks, and valves. When selecting your fitting, match the polypropylene tubing OD or copper tube size ID to the appropriate connector, and verify the NPT thread size matches your target component. This fitting is designed for cold water service and is particularly well-suited for installations where frequent disconnection is required for filter changes or system maintenance.

💧 Pro Tip: Before inserting tubing, cut the end square and clean any burrs to ensure the O-ring seats properly. Push the tubing firmly until you feel resistance, then give it an extra push to lock the collet—test with a gentle pull to confirm secure engagement before pressurizing the system.

Male Connector

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Watts AquaLock - Large Diameter Male Connector