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AquaLock™ End Cap — 1/2 in.
- Mfg.#
- P-670
- Sku#
- 7384191
- AQUALOCK SERIES FITTING: Ideal for vibrating and dynamic applications, the AquaLock Series works with copper, CPVC, PEX (LDPE, MDPE, HDPE), and CTS rated pipe. Unlike barb fittings, this fitting joins the tubing on the outside, increasing the flow capacity, and rotates under pressure for high flexibility during installation.
- DURABLE DESIGN: The Watts AquaLock Plastic Series is designed and manufactured in polysulfone – a high-performance thermal plastic material – for many years of trouble-free service life. They feature a unique O-ring guide that provides a zero-leak connection, making them perfect for DIY pipe repair.
- QUICK CONNECT: Easy to install and handle, Watts AquaLock connectors utilize a swivel nut with NPS straight threads and a cone seal, which allow the installer to thread onto NPT, NPS, BSP, and most other threads without tools, tube inserts, or thread sealant. Simply thread on and hand tighten.
- MULTIPLE CONFIGURATIONS: Capable of being used for hot and cold water applications, including behind-the-wall applications, Watts AquaLock fittings are reusable and available in a wide range of configurations and sizes to suit your needs. This model is an end stop cap with a size of 1/2" CTS (Copper Tube Size).
- EVERY DROP COUNTS: Water. It's in our name and close to our hearts. Since 1874, Watts Water Technologies has been delivering innovative technologies that make the world's most precious resource safe and accessible. Everything we design is made to keep the Earth's most precious resource safer, cleaner, and more useful for our customers. Our family of brands offers one of the most varied product lines in the world, with world-class, water-related solutions.
* Estimated stock levels as of Mon, May 18, 2026. All items subject to prior sale. Prices may vary between stores and online. Please call ahead to confirm availability of items marked as Limited Stock.
Description
The AquaLock End Cap, 1/2-Inch is an easy-to-use end stop cap designed to finish or temporarily seal 1/2" CTS lines where a reliable, leak-free connection is needed. Homeowners and pros will appreciate its polysulfone construction for long-lasting durability and the unique O-ring guide that provides a zero-leak seal—ideal for DIY repairs, behind-the-wall terminations, or temporary shutdowns. AquaLock fittings join tubing on the outside, preserving internal flow and allowing the fitting to rotate under pressure for flexibility in vibrating or dynamic applications with copper, CPVC, PEX (LDPE/MDPE/HDPE), and CTS-rated pipe. The swivel nut with NPS straight threads and cone seal lets you thread onto NPT, NPS, BSP, and most other threads by hand—no inserts, sealant, or tools required—and the cap is reusable for future changes.
Specifications
General
| Connector Type | Cap |
|---|---|
| Item Dimensions | 0.3 x 3 x 4 inches |
| Item Weight | 0.03 lb |
| Material | Plastic |
| Thread Type | NPT |
| Type | End Cap |
Dimensions
| Item Height (inches) | 4 in |
|---|---|
| Size | 0.5 in |
Manufacturing Details
The following information is subject to change without notice
| Manufacturer Warranty | 1 Year Limited Warranty |
|---|
