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Engineered To Meet the Most Exacting Specifications... Yours.

GRI has been advancing the development of fluid pumping solutions for over half a century. Along the way, we’ve developed an extensive product line of cutting-edge pumping solutions for a wide array of industries and applications. But that truly is just the beginning.

Built with advanced materials, motors and methods, our high-quality, innovative pump lines are simply the perfect platform from which we create customized solutions. As your pump partners, GRI works in close collaboration with you and your team, evaluating your application and creating tailor-made, turnkey solutions built specifically to meet your specialized needs and requirements.

Our Begin Your Build engine enables you to get a jump on the process, helping us to quickly identify the appropriate category and product family from which we can begin to craft your perfect pump.

Not sure of what you need? Contact Us!

Step 1

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Your Pumping Solutions.

Begin Your Build is a starting point to a solution specific to your application. The page results may not reflect all of your OEM variables. Please contact GRI to begin the discussion of your solution in more detail.

Bellows Dosing Pumps

Product Overview

GRI’s Bellows Dosing Pumps are ideal for low flow, low-pressure metering applications where a fixed flow rate is required. These positive displacement pumps are constructed entirely of plastic and use GRI’s time-proven bellows technology to provide a durable and accurate chemically resistant metering pump. When pumping water in laboratory test conditions, pumps rate at +/- 1%, stroke to stroke.

For a complete description of our Bellows Dosing Pumps, please click the blue "Pump Overview & Data Sheet" button.

Contact Us to Customize

Product Details

Typical OEM Applications include, but are not limited to:

  • Film and x-ray processors
  • Silver recovery systems
  • Wafer and silicon chip washers and processors
  • Detergent dispensers
  • Blood analyzing equipment
  • Industrial floor scrubbers
  • Thermo therapy equipment
  • Waste removal systems
  • Wastewater and water treatment systems

Flow Rate: 3.3 to 43.2 ml/min
Max. Discharge Pressure: 5 PSI
Max. Fluid Temperature: 140°F (60°C)
Self-Priming: Yes
Hose Connectors: 9mm Barbed
Voltage (50/60 Hz): 115v, 230v, ±10%
Accuracy %: ± 1% stroke to stroke, ± 5% pump to pump
Max Fluid Viscosity: 5,000 centistokes

O-Rings (Elastomers): EPDM
Duckbill / Umbrella Valve: EPT
Valve Body: PPR
Displacement Cup: PPR
Bellows: PP

  • Average repeatability from stroke-to-stroke, ±0.75%
  • Dry run capability
  • Self-priming
  • No dynamic seals
  • Superior corrosion resistance
  • Economical
  • Simple flow adjustment