Reliance Valves Water Shock Arrestor - 12.7mm

Water hammer, also known as hydraulic shock, is a pressure surge or wave caused when water in motion is forced to stop or change direction suddenly. This can happen with quick-closing valves and can create loud banging noises and stress on plumbing systems.

A shock arrestor contains a cushion of air or gas that compresses when a shock wave hits it. This compression absorbs the energy of the shock wave, preventing it from traveling through the pipes and causing noise or damage. It functions similarly to a mini expansion vessel.

For optimal performance, the shock arrestor should be installed as close as possible to the fitting or appliance that causes the water hammer. This ensures the shock is absorbed at its origin.

This Reliance Valves Water Shock Arrestor is designed for 12.7mm (1/2 inch) nominal bore pipe.

No, the Reliance Valves Water Shock Arrestor is a maintenance-free component. It does not require regular servicing.

Yes, if you have basic plumbing knowledge and the necessary tools, you can install the shock arrestor yourself. If you are unsure, it is recommended to hire a qualified plumber.

This shock arrestor is specifically designed to prevent the banging or knocking noises associated with water hammer. It may not resolve other types of plumbing sounds like dripping or whistling.

Ensure the shock arrestor is installed as close as possible to the source of the water hammer. Check that the arrestor is correctly fitted and the water supply is fully restored. If the issue continues, there might be multiple sources of water hammer or a different plumbing issue.

Turn off the water supply. Check the thread connection for any debris or damage. Re-apply thread sealant or PTFE tape and tighten the connection firmly but avoid over-tightening.

This is unlikely with a properly installed shock arrestor. Ensure the arrestor is not cross-threaded or damaged internally. Re-check installation steps and ensure the water supply is fully open.