Water Hammer Arrestor; Type Piston; Applicable Standard ANSI/ASSE 1010, FDA 111; PDI Symbol A; Inlet Size 1/2"; Inlet Connection Male Threaded; Top Shape Round; Fixture Unit Rating 1-11; Overall Height 7-1/2"; Body Material Copper Tube; Spherical Piston Material Polypropylene; Inclusions/Features (2) EPDM O-Ring; Lead-Free; Maximum Working Pressure 350 PSIG; Temperature Rating 250 Deg F; Packaging Quantity 16 per Case; Warranty Lifetime Limited