With proven performance in the field and backed by an industry leading 5-year
warranty, ARO® air operated diaphragm pumps are a truly versatile fluid handling
solution for numerous applications. Known for industry-leading efficiency, reliability,
flow rates, and a large range of materials and porting, ARO® has the right pump to
deliver consistency in the most demanding situations. The ARO® range of diaphragm
pumps offers many materials of construction.


  • 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


  • 66073-1 Air Line Connection Kit: contains Piggyback Filter / Regulator, pipe nipple & 5′ section of hose
  • 637438 Ported Exhaust Kit
  • 93110 Air Motor Muffler
  • 76763 Wall Mount Bracket
  • 637428 Air Section Service Kit
  • 637427-XX Fluid Section Service Kit

Pump Casing Materials

  • Polypropylene

Diaphragm Materials

  • Long Life PTFE
  • Santoprene
  • Hytrel
  • PTFE w/ Santoprene backer


  • Maximum Flow gpm (lpm): 14.8 (56)
  • Maximum Discharge Pressure psi (bar): 100 (6.8)
  • Fluid Ports Inlet/Outlet (bsp): 3/4 – 14 N.P.T.F.-1 Rp 3/4(3/4-14 BSP, parallel)
  • Material of Construction: Polypropylene
  • Maximum Solids in (mm): 3/32 (2.4)
  • Maximum Dry Suction Lift ft (m): 15 (4.5)