Electro-Polished Diaphragm Pumps

Yamada® EP Series Diaphragm Pumps

Yamada Electro-Polished (EP) Series pumps are specifically designed for transferring ultra high-purity solvents and other non-corrosive liquids compatible with 316 Stainless Steel.

Pumps include 20Ra Electro Polished 316 Stainless Steel wetted components, PTFE elastomers and FNPT liquid ports.


  • 20RA Electro Polished 316 Stainless Steel wetted components PTFE Elastomers
  • 1/2”, 3/4” & 1” FNPT liquid port sizes standard. Also available sanitary welded.
  • Leak-free, registered fit, mating surfaces
  • Patented, self-lubricating air valve never needs internal or external lubrication
  • Non-stalling air valve which includes a noncentering, spring assisted shuttle, ensuring a positive shift every time
  • Short stroke reduces diaphragm flex and extends life
  • Field-proven design
  • Maintenance friendly
  • Electro polished pulsation dampeners also available
  • Custom air motor control options available


Learn More ››› What is Electo-Polished?



Port Sizes

1/2", 3/4", and 1" FNPT

Maximum Flow Rate

 35 GPM

Operating Range

 20 to 100 PSI

Optional Swagelok®, VCR®, Sanitary Clamp, Tube or ANSI Flange Connections

Optional clean room flush & bagging available



Isopropyl Alcohol


Methyl Ethyl Ketone


And Many More...

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