Comet MP30 Diaphragm Pump

Comet MP30 twin diaphragm pump alone or with gear reduction and regulator.
Free Shipping and VIP Next Day Shipping - Final price (no handling, no hidden fees, no tax).

Shown with Pressure Regulator not included on MP30.

Shown with Pressure Regulator not included on MP30.

  • Comet MP30 Pump
    USD $719.86
    • Buy 2 for USD $677.39 each and save 6%
    • Buy 6 for USD $648.59 each and save 10%
  • Comet MP30 Diaphragm Pump - VIP Next Day Delivery
    USD $794.86
  • MP30 Pump with Gear Box
    USD $784.29
    • Buy 2 for USD $738.02 each and save 6%
    • Buy 6 for USD $706.65 each and save 10%
  • Comet MP30 Pump with Gearbox - VIP Next Day Delivery
    USD $859.29
  • Comet MP20 and MP30 Repair Kit
    USD $149.43
    • Buy 2 for USD $140.61 each and save 6%
    • Buy 6 for USD $134.64 each and save 10%
  • Comet Regulator mp20,mp30,p38 2 Outlet
    USD $196.78
    • Buy 2 for USD $185.17 each and save 6%
    • Buy 6 for USD $177.30 each and save 10%
  • Comet Gear Reducer
    USD $615.38


The Comet MP30 is a medium pressure, twin diaphragm pump that is internally manifolded with anodized aluminum for less leak points. This pump is well suited for medium pressure applications, such as lawn care, pest control, agriculture, foam insulation, and heavy-duty industrial applications. Easily handles a wide range of fluids, including liquid fertilizers, herbicides, pesticides, de-icing materials, suspension products, abrasives, and other hard-to-handle fluids.

MP30: Twin diaphragm pump with universal drive face and mounting rails.

MP30GR: Twin diaphragm pump with gear reduction for gas engines with a 3/4" shaft. Includes pressure regulator with manual dump lever and mounting rails.

  • Max. Flow: 8 GPM
  • Max. Pressure: 435 PSI
  • Max. Rated Speed: 550 RPM
  • Max. Fluid Temperature: 104° F (40° C)
  • Min. Power: 2.3 HP
  • Port Sizes (MP30): 7/8" inlet
  • Port Sizes (MP30GR): 1" inlet, 1/2" outlet, 3/4" bypass
  • 6 hole flange shaft
  • Two semi-hydraulic diaphragms
  • Medium pressure pump
  • Anodized aluminum materials
  • Pump Shaft Rotation: CW and CCW
  • Self-priming
  • Can be run dry
  • Large capacity oil bath crank case
  • Easily adaptable to PTO, gas engine, hydraulic motor, or belt drives
  • Weight (MP30): 15 lbs.
  • Weight (MP30GR): 23 lbs.

Recommended Regulator for the MP30 Diaphragm Pump is the 5026.0080. Recommended Gearbox for the MP30 is the 5005.0216.

Comet 5026.0080 Repair Kit includes:

  • 1 x 1800.0033 Accumulator Diaphragm
  • 2 x 1201.0071 Flat Gaskets
  • 2 x 1210.0057 O-Rings
  • 2 x 1210.0021 O-Rings
  • 2 x 1800.0020 Diaphragms
  • 4 x 1210.0191 O-Ring
  • 4 x 1220.0021 Valve Assemblies
  • 1 x 1210.0046 O-Ring

Please check the files under Related Information if you desire more information regarding this Comet MP30 Diaphragm Pump, such as parts lists, a user manual, performance charts, and more.

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On our most urgently requested products, Rittenhouse offers VIP shipping. The overnight shipping price is included and we will do our utmost to get your order to you within the next business day. Applicable to the lower 48 states only (excludes Alaska and Hawaii).

  • You must order before 3:00 PM Eastern time (12:00 PM Pacific time).
  • Overnight shipping is included in the product price.
  • A Rittenhouse VIP manager will be responsible for following your order from receipt to delivery.
  • We will let you know immediately if there is a problem with your order.

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Related Information

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