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2" EXP Metallic

Expert series diaphragm pumps

2 inch exp metallicMaximum flow rate: 651 LPM

The 2" EXP Metallic diaphragm pump offers the ultimate in heavy-duty pump design, delivering up to four times the lifespan of traditional diaphragm pumps.


  • ARO's patented 'Unbalanced' air valve eliminates stalling for ultimate dependability.
  • Simul-Shift™ valve delivers ultra-positive, reliable shift signal.
  • Wide range of construction materials ensures optimum fluid compatibility and maximum versatility.
  • Ribless fluid caps eradicate cracking.
  • Bolted construction ensures leak-free fluid handling.
  • Modular design makes servicing easy.


  • 66312 Air Line Connection Kit: with piggyback filter/regulator, pipe nipple and 1.5m section of hose
  • 67350-1 Cycle Counter Kit
  • 67237 Diaphragm Failure Detection (DFD)
  • 67174-20 Screened Inlet Adaptor Kit
  • 67263 Continuous-Duty Muffler
  • 637369 Air Section Service Kit for PX30R
  • 637421 Air Section Service Kit for PX20A and PX20S

Pump Casing Materials

  • Cast Iron
  • Aluminium
  • Hastelloy-C
  • Stainless Steel

Diaphragm Materials

  • Polypropylene
  • Nitrile
  • Hytrel
  • PTFE with Santoprene backer
  • Medical Grade Santoprene
  • Viton