Nickel-plated Brass Full Bore Ball Valve features PTFE seats and NBR seals and is capable of withstanding working temps from -10°C to +120°C, with a 600 psi rating. Lever is flat steel with a plastic coating, and materials of construction include Body: Nickel Plated Brass (HPB-57-3), End Cap: Nickel Plated Brass (HPB-57-3), Ball 1/4" to 1/2" & 3": Brass Chrome Plated, Ball 3/4" to 4" (except 3"): Stainless Steel, Gland Nut: Brass (HPB-57-3), Nut: Stainless Steel, O-Ring: Flurubber and NBR. Suitable for water, heating, air conditioning and compressed air systems.