Graco Husky 1050 air-operated double diaphragm (AODD) metal pump, part number 647028, with an aluminium fluid section and aluminium center section, Stainless Steel seats, PTFE balls and a PTFE/EPDM 2-Piece diaphragm. 1 in. (25.4 mm) NPT(f) fluid inlet and outlet, 1/2 in. NPT(f) air inlet, 3/4 in. NPT(f) air exhaust. Maximum free-flow delivery 50 gpm (189 lpm), 280 cpm, max size pumpable solids 0.125 in (3.175 mm), aluminium fluid section and aluminium center section, weight 23 lb. The Graco product page reports a maximum operating temperature of 220 degF (104 degC) for this material combination.