Madden Manufacturing, Inc.

Madden Manufacturing, Inc.

P.O. Box 387 Elkhart, Indiana 46515 USA

JN Series Diaphragm Metering Pump

JN Series Diaphragm Metering Pump

These simple, rugged, accurate pumps are used in many industrial plants for injecting a controlled flow of highly reactive liquids. Heavy duty industrial grade construction means those little pumps will deliver many years of trouble free 24-7-365 pumping.


  • JN Series Pumps are designed for especially low rates. Double ball checks with Teflon valve seats assure ±1% steady slate repeatable accuracy over a 10:1 turndown range.

  • Manual output control knob is located on top of the pump for easy access.

  • Automatic pump output control is available for pumps equipped with a variable speed motor.

  • Industrial grade worm gear reducer is permanently lubricated and C face mounted to the motor. Precision internal pump parts run in an oil bath for extended service life. No external lubrication required.}

  • Double diaphragm option is available for superior protection from dangerous liquids.

  • When equipped with the proper materials the JN Series pumps are excellent for pumping dangerous liquids such as acids, caustics and solvents.

  • Tough fabric reinforced rubber diaphragms protect the drive train from the pumped liquid. The short .090" stroke with 2" diameter piston increased diaphragm life by reducing fatigue.

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