ARO Compact Series 3/4" Ported Non Metallic Diaphragm Pump, 14.8 GPM (56 LPM) flow. Designed to meet your OEM application needs! Install directly onto your 3/4" application, saving you a fitting and a possible leak point. Manufactured for complete corrosion resistance - constructed with polypropylene center body, standard stainless steel fasteners, and polypropylene casing materials. Efficiency - Simul-Shift™ valve provides ultra-positive, reliable shift signal. Reliability - ARO's patented 'Unbalanced' air valve ensures no-stall operation. Versatility - Compact design enables usage in limited space and other versatile locations. Environmentally Sound - Bolted construction for leak-free fluid handling. Serviceability - Easier service through modular design. Diaphragm Materials: Santoprene, Hytrel, PTFE w/ Santoprene backer.