Compact pitless adapter. Silicon bronze body. Buna-n O-ring. Verticle position indicator. Factory tested to 250 P.S.I. Supports 2500 lb. Fits 5″ to 12″ casing. Lead-free. Code approved in California. No. 1840SB: Size: 1″, Material: Silicon Bronze, Pressure Rating: 250 psi, Maximum Support: 2,500 lbs