Graco Husky 1050 air-operated double diaphragm (AODD) metal pump, part number 647004, with an aluminium fluid section and a standard aluminium center section, Polypropylene 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), weight 23 lb. The Graco product page reports a maximum operating temperature of 150 degF (66 degC) for this material combination.