AquaLock 3515R-1008 Sea Tech 1/2" to 3/8" CTS Reducing Union Adapter

AquaLock

<h3>About AquaLock by Watts</h3><p>AquaLock&trade; is a brand under Watts Water Technologies, one of the most respected names in flow control and fluid management. Built on a foundation of engineering precision, AquaLock push-to-connect fittings are designed and manufactured for lasting service life across a wide range of demanding applications &mdash; from residential plumbing and marine systems to RVs, agricultural equipment, and industrial fluid lines.</p><p>The AquaLock line traces its roots to the SeaTech brand, which for decades served as a go-to connection solution for boatbuilders and marine distributors worldwide. Rebranded and expanded under the Watts umbrella, AquaLock has grown into a comprehensive push-to-connect fitting system trusted by OEMs, contractors, and DIY enthusiasts alike. The product lineup includes brass fittings, mini fittings, and a full plastic series &mdash; offered in both inch (imperial) and metric formats to serve global markets.</p><h3>Why AquaLock Fittings Stand Out</h3><p>What sets AquaLock apart is its combination of tool-free installation and robust engineering. A corrosion-resistant stainless steel gripper ring locks securely onto CTS-sized pipe made from PEX, copper, or CPVC &mdash; without requiring clamps, compression sleeves, adhesives, or crimping tools. This dramatically speeds up installation while reducing the risk of connection errors and leaks.</p><ul><li><strong>No tools required:</strong> Connect and disconnect quickly for fast, flexible installation in tight spaces.</li><li><strong>Full flow design:</strong> No pipe stiffeners needed for copper and CPVC, eliminating additional head losses.</li><li><strong>Zero-leak patented O-ring guide (Plastic Series):</strong> Protects the O-ring during connection, aligns tubing every time, and increases side-load capacity.</li><li><strong>Rotate under pressure:</strong> Brass, mini, and plastic fittings can rotate even when pressurized, allowing for easier system adjustments.</li><li><strong>Certified for potable water:</strong> Approved for behind-the-wall plumbing applications.</li></ul><h3>Applications Across Industries</h3><p>AquaLock fittings are built to perform wherever reliable fluid connections matter. The brand is especially well regarded in the marine sector, where it remains a top choice for boatbuilders and marine distributors. Its <a href="/18054-aqualock-push-on-hose-fitting-17361">push-on hose fittings</a> make onboard plumbing fast and dependable, even in the tight quarters of a vessel&rsquo;s water system. For broader plumbing and mechanical applications, AquaLock&rsquo;s nylon pipe and hose fittings deliver lightweight, corrosion-resistant connections that hold up in fresh water, RV, and industrial environments. Technicians working with pneumatic systems will also find AquaLock&rsquo;s <a href="/18054-aqualock-air-tool-hose-fitting-48913">air tool hose fittings</a> engineered to handle pressurized lines with the same snap-and-go convenience that defines the entire AquaLock system.</p><p>Whether you&rsquo;re re-plumbing a boat, maintaining an RV water system, or building out a fluid control assembly, AquaLock fittings offer a proven, professional-grade solution backed by the Watts engineering legacy.</p>