AquaLock Nylon Pipe & Hose Fittings

AquaLock Nylon Pipe & Hose Fittings: No-Tool Connections Built to Last

When a fluid connection needs to be both fast and dependable, the material of the fitting matters as much as the design behind it. AquaLock — a brand under the Watts Water Technologies family, formerly known as SeaTech — has built its reputation on push-to-connect fittings engineered for reliability across demanding environments. Their Nylon Pipe & Hose Fittings bring that same philosophy into a lightweight, corrosion-resistant nylon format tailored for marine, RV, and plumbing applications.

Push-to-Connect Simplicity, Professional-Grade Results

The defining characteristic of AquaLock's nylon fittings is their tool-free installation system. Rather than requiring soldering, crimping, clamps, or adhesives, these fittings work on a simple push-to-connect principle: insert the tubing and the fitting locks it in place. This dramatically reduces installation time and the risk of connection errors or leaks in the field.

Inside each fitting, a stainless steel gripper ring provides the mechanical hold. This internal collet grips the tubing firmly upon insertion while still allowing for easy disconnection when the system needs to be modified or serviced — a meaningful advantage for marine and RV builders who must plan for future maintenance access.

The Plastic Series Patented O-Ring Guide

What sets AquaLock's nylon and plastic fittings apart from generic push-connect alternatives is their patented zero-leak O-ring guide. This proprietary feature protects the O-ring from damage during the connection process, aligns the tubing with the O-ring on every insertion, prevents the O-ring from becoming dislodged, and increases the fitting's side-load capacity. The result is a consistently leak-free seal, even in installations where the tubing may not approach the fitting at a perfectly straight angle.

Broad Tubing Compatibility

AquaLock nylon fittings are designed to work across a wide range of common tubing materials. Whether the application calls for copper, CPVC, PEX, LDPE, MDPE, HDPE, or polypropylene tubing, AquaLock's push-to-connect interface handles the connection without requiring special adapters. Fittings are available in standard CTS (Copper Tube Size) dimensions in both inch (Imperial) and metric formats, making them suitable for North American and international builds alike.

Marine, RV, and Plumbing Applications

AquaLock has earned recognition as a leading choice among professional boat builders and marine distributors worldwide. Their nylon fittings are well suited for potable water lines, raw and fresh water washdown systems, live well systems, hot and cold water runs, drain lines, and windshield washing systems. The lightweight nature of nylon construction also makes these fittings a practical choice in weight-sensitive applications like RV plumbing, where every pound counts. AquaLock fittings in the Plastic Series can also rotate under pressure, providing added flexibility when routing hose lines through tight spaces.

Certified for Potable Water

AquaLock nylon fittings carry certifications for use in potable water applications and for behind-the-wall plumbing installations — giving builders and installers the confidence that the fittings meet recognized safety and quality standards for water-contact use.

Explore the full range of AquaLock products or browse the complete selection of Nylon Pipe & Hose Fittings to find the right connection solution for your build.