PPP Kwik-Press Water Hammer Arrestor, 1/2 in Connection, Sweat Connection, 0 to 80 psi, Lead-Free, Copper, 32 to 212 deg F, 7-1/8 in L, Domestic/Import: Domestic, Additional Information: 250 psi Static Pressure, 400 psi Spike Pressure, 60 psi Preload Nitrogen Pressure, 1 to 11 Fixture Unit Capacity, Copper/Brass Cap, Composite Piston, EPDM O-rings, Copper Adapter, Dow-Corning Silicone #111 Seal Lubricant