3 X 3.5 INCH HILGE 316 STAINLESS STEEL CENTRIFUGAL PUMP Stock Number: P-0865 Mfg. Hilge Type HYGIA-CN 11/60BEX 316 POLISHED STAINLESS STEEL! 3 x 3.5 inch in and out 15 Hp, 3515 rpm, 230/460v, 3ph 48 gpm @ 81 psi, range 26 to 132 gpm. Mfg. Specs on file. (2) available Posted in Pump, Centrifugal.