Graco Husky 1050 air-operated double diaphragm (AODD) metal pump, part number 647666, with an aluminium fluid section and aluminium center section, Polyester Elastomer seats, Acetal balls and a TPE (Hytrel) 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 150 degF (66 degC) for this material combination.