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Mini Water Hammer Arrestors


1/4 to 5/8 in. (8 to 16mm)


Series 05 Mini Water Hammer Arrestors are used in light commercial and residential applications to control water pressure shock and prevent water hammer conditions. Series 05 is factory air charged and is not rechargeable. It can be installed in new or existing plumbing systems in concealed locations with a standard pipe tee in any angle. Series 05 is ideal for dishwashers, clothes washers, and quick-closing faucets. Available in various models: Model 05 with NPT connections, Model 05H with hose connections, Model 05S with solder connections, Model 05C with compression connections, Model 05-PEX-T with barb tee, Model 05-C-T with compression tee, or 05-CXT with compression x reverse nut for angle stop installations. Maximum Working Pressure: 150psi (10.3 bar).

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Disclaimer: Watts product dimensions in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements, please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.

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Additional Information

Danger – Scalding Lurks!

Every year, thousands of people suffer serious thermal shock or scalding injuries in their bathtubs, sinks and showers.

Click here for informative resources to help you protect against these dangers.

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