Half-Inch NPT Water Hammer Arrestor

Address pressure-shock noise at a compatible water-supply connection with a compact 1/2-inch NPT water-hammer arrestor.

✅ Add a shock-absorption point - The arrestor is intended to reduce the transient associated with a suitable valve closing.

✅ Fit a defined threaded connection - A 1/2-inch NPT interface provides the described pipe-fitting arrangement.

✅ Keep the installation compact - The small fitting format suits an appropriately planned local connection.

Match the arrestor to the plumbing system

A fast-closing valve can produce a pressure change that is heard as a knock in the pipework. A suitable arrestor adds a component intended to address that transient near the relevant connection.

Check thread standard, pressure, temperature and installation requirements before fitting. NPT is not the same as BSP, and persistent noise may also need pipe support or valve investigation rather than assuming one fitting resolves every cause.

Technical details

• Type: water-hammer arrestor
• Thread: 1/2 inch NPT
• Material: stainless steel
• Package: one fitting
• Use only within the fitting's specified system limits

Add a correctly matched arrestor to your plumbing-noise investigation.