sicoince Ice Maker Outlet Box With Water Hammer Arrestor and 1/4-Turn Ball Valve, Stop Hammering Reduce Banging Noise, Inlet 1/2 Inch Male Thread or Sweat, Outlet 1/4 Inch Compression IM-611-1, Pipe Fittings -
OATEY Washing Machine Outlet Box with Hammer Arrestor | Home Hardware