Water Hammer Arrestor 1/2" BSP

Water hammer arrestor with 1/2 inch BSP male connection.

Water hammer occurs when a device (such as a tap or valve) is suddenly closed, creating harmful over pressure. In domestic plumbing this is experienced as a loud banging, resembling a hammering noise.

This device incorporates a steel spring and plastic disc with double o-ring seal, which opposes much of the excess pressure.

** BSP thread sizes are measured a special way - have a look at our information page for more details **