SURGEx LFC15-A is a Copper piston water hammer arrester size A fitted with LEAD FREE Brass fitting having a BSP threaded male connection size 1/2" . The LFC15-A can be used in cold and hot water and in new or old installations. The arrester is designed to be connected to the pipeline through a 'Tee' fitting (not included). It is suitable for installation indoor (washing machines, mixer taps, ...etc.) or outdoor in irrigation systems where sudden shut-off can occur from taps or devices such as timers or solenoid valves. SURGEx LFC15-A had been charged at factory and does not need to be recharged later on. It is maintenance free.