Water hammer arrestor, size 1 in., MIP connection, material of construction copper, overall height 8-3/16 in., Overall width 1-5/8 in., Standards iapmo, ASSE 1010, ANSI a112.26, Pdiwh201, certification PDI wh201 certified, water hammer arrestor, size 1 in., MIP connection, material of construction copper, overall height 8-3/16 in., Overall width 1-5/8 in., Standards iapmo, ASSE 1010, ANSI a112.26, Pdiwh201, certification PDI wh201 certified water hammer arrestors control water pressure shock and prevent water hammer conditions. Install in new or existing plumbing systems at any angle. Ideal in dishwashers, clothes washers and quick-closing faucets. Max. Pressure: 150 psi, precharged to 30 psimax. Temp.: 180°Fcommercialmeet iapmo, ASSE 1010, ANSI a112.26, Pdiwh201. PDI wh201 certified. Max. Pressure, preset setting: 150 psitemp. Range: 33° to 180°f.