Lid stays closed by strong positive action spring. High visibility Tuff Top or brass lids available. Constructed of solid red brass for durability, economy, and recyclability. Available with Acme threaded outlet (QB44 Series only) (AT). Wrench flats at base for easy installation. Drain hole in body to minimize debris collection. Chevron-shaped wiper seal to reduce leakage around key while inserted. Flow ranges from 5 – 100 gpm. Handles pressures up to 150 psi. British version available (BS). Five-year warranty.