The HydraRester ‘A’ size is ideal for installation on supply lines to washing machines, electronic and clockwork garden water timers, dishwashers and all general domestic and commercial applianceslikely to cause water hammer.When a shuttering fixture closes, a pressure wave begins to move back along the pipe. As it reaches the arrester the force acts against the arrester piston, which, in turn, pushes against a charge of air. The air is then compressed, dissipating the wave energy and nullifying the hammering effects. Water Hammer Arresters do not compensate for loosely fitted pipe work.The HydraRester is formed from Type L copper tube and is cold rolled and spun closed seamless. The piston carries two EPDM seals and is lubricated with approved 111 Silicone Compound. System surge pressure can be kept below 1000kPa while the arrestor can operate at a safe working pressure to 2300kPa. The device is easily installed via the various BSP threaded fittings and can be mounted in any position 90° to the water flow.
