1/2″ Male NPT Water Hammer Arrestor AA Size. Water hammer arrestors are used in plumbing systems to mitigate the shock generated by quick closing valves, such as washing machine valves Certified by the American Society of Sanitary Engineering to the ANSI/ASSE 1010-2004 Standard AA Size for point of use or appliance applications Lifetime cycle tested at U.S. Testing Laboratories to withstand 10,000 shock cycles. Factory tested to withstand 500,000 cycles without failure (654-C tested) Allows for installation in 2 × 4 wall cavity Installs at any angle ASSE 1010 certified as a water hammer arrester that is “designed to provide continuous protection, without maintenance” allowing the HydraRester to be installed without access panels 1/2″ Male NPT Connection
