Murzan PI 50-Series Double Diaphragm Pump. Model: PI50SL. S/N: 94011873. Flow rate (water 60 °F): 100 gpm @ 40 psig and 90 tdh. Air supply pressure required (water): 75 psig. Air consumption (water): 82 scfm. Flow rate (catsup): 70 gpm @ 40 psig and 90 tdh. Air supply required (catsup): 80 psig. Air consumption (catsup): 60 scfm. The Murzan PI 50 is the only diaphragm pump specifically designed to meet the special requirements of the sanitary industry. High efficiency oil free air valve, maintenance free ball check system or flap check valve and total visual inspection of all wetted parts, give the user safe and efficient transfer of foods, cosmetics and pharmaceuticals - USDA listed, FDA approved, the PI 50 Series is manufactured to meet general 3-A Standards. Inlets: (1) 1/2 in. dia. FNPT (air supply), (1) 1-1/2 in. dia. S-line fitting. Outlets: (1) 1 in. dia. muffler, (1) 1-1/2 in. dia. S-line fitting. Overall dimensions: 19 in. L x 12 in. W x 26-1/2 in. H.