Water Hammer Arrestor AW Pax 1/2" x 1/2" – Shower & Bath

Water hammer protection for exposed shower and bath fittings

Quick-closing valves in shower and bath mixers generate hydraulic shock waves — known as water hammer — causing pipe noise and premature wear of ceramic cartridges. The AW Pax 1/2" x 1/2" Chromeline absorber eliminates these shocks at the source, discreetly and durably.

Key benefits at a glance

• Absorption of pressure peaks up to 25 bar
• Noise reduction of up to 5 dB(A)
• Compliant with Swiss standard SIA 181
• Chromeline finish — elegant and discreet
• G 1/2" x 1/2" connection with loose nut for easy installation

Installation

The arrestor is installed directly at the inlet of the exposed shower or bath fitting. The protrusion of L = 53 mm must be strictly observed during installation. Must be installed in pairs — one module on the hot water inlet, one on the cold water inlet.

Frequently asked questions

What is the difference with the 3/8" x 1/2" model?

This 1/2" x 1/2" model is designed for exposed fittings where both connections are 1/2". The 3/8" x 1/2" model is for fittings with a 3/8" inlet connection. Please check your mixer tap connection before ordering.

Why must the arrestor be installed in pairs?

Each mixer tap has two water inlets — hot and cold. For complete and effective protection, one arrestor must be installed on each inlet.

Which fittings is it compatible with?

Compatible with all standard exposed fittings with a 1/2" x 1/2" connection — shower and bath. This is a very common connection in Switzerland and Europe.