Altecnic Mini 15mm Roboshock 0.16L Shock Arrester

If the pressure in a system is high, the water when flowing has a greater momentum which when brought to a sudden halt, will create a shock effect causing pipes to shudder and vibrate.
This is normally caused by the rapid closure of lever operated taps or valves, solenoid valves or valves in dish washers and washing machines.
The RoboShock (patent pending) shock arrester can be used as a water hammer arrester intended for a single outlet, such as a tap or washing machine, or a small group of outlets, such as in a bathroom.
The vibration caused by water hammer is not only annoying but eventually can result in split or cracked pipe fittings, especially at joints.
The RoboShock shock arrester should be installed close to the tap or valve minimising the effect of the shock on the system.
This shock arrester is suitable for use in coastal environments and with brackish water due to it’s stainless steel construction.

Operating Principle
The shock arrester consists of a pressure vessel, divided into two chambers by a flexible rubber membrane or diaphragm.
The closed chamber is filled with air, pressurised to 3.5 bar, which acts as a damper due to the compressibility of the trapped air.
The open chamber is connected directly to the system and is filled with water.
When a pressure surge occurs, the compression of the air counteracts the thrust on the rubber membrane allowing a small change in volume which absorbs the excess pressure.