1995 Murzan Double Diaphragm Pump. Model: PI50DL. S/N: 95112568. Designed to specifically meet the special requirements of the sanitary industry, PI50DL features include: 304ss wetted parts, food grade gaskets, food grade diaphragm and a high efficiency, oil free air valve that needs no lubrication. Constructed of Teflon and stainless steel, and operating with minimal losses to friction and higher performance at lower input pressure, the PI50DL can run abrasives or solids up to 6” with dry running as an option. Maintenance free ball check system prevents stalling. Inlets: (1) 3/4 in. dia. FNPT, (1) 3 in. dia. S-line fitting. Outlets: (1) 1 in. dia. FNPT, (1) 3 in. dia. S-line fitting. Overall dimensions: 25 in. L x 14 in. W x 40 in H. (ACN85).