Two tapered threads at the inlet for connection to the pipe and one straight thread for a locking nut. Machined flange for support against tank wall. Body entirely in bronze. Toothed arms for quick and easy water level adjustment (all sizes). Long and short arms made of high strength manganese bronze. Stainless steel pivot bolt assembly. Single lever action without blocking. Replaceable seals. Free discharge capacity. No. R400-1/2 12 gpm at 35 psi, 22 gpm at 85 psi. No. R400-3/4 21 gpm at 35 psi, 39.9 gpm at 85 psi.