Contents Pages Mini Bellows models are ideal for low flow, low pressure metering applications. The pump is constructed entirely of plastic and utilizes GRI’s time-proven bellows technology to provide an accurate chemically-resistant metering pump with a long life, at an economical price. Features: • Average repeatability from stroke-to-stroke, ±0.75% • Dry run capability • Self-priming • No dynamic seals • Superior corrosion resistance • Simple flow adjustment 180 Hines Ave. • Bellville, OH 44813 • PH: 419-886-3001 • FAX: 419-886-2338 • www.GRIpumps.com GRI Mini Bellows Pumps Overview 0818a 081718

Mini Bellows Pumps PUMPS Mini Bellows Metering Pumps Product Overview Mini Bellows Metering Pumps are ideal for low flow, low pressure metering applications. The pump is constructed entirely of plastic and uses GRI’s time-proven bellows technology to provide an accurate chemically-resistant metering pump with a long life, at an economical price. Mini Bellows Metering Pump Operation: The Mini Bellows Metering Pumps operate on a positive displacement principle. The rotation of the motor shaft is transmitted into an up and down linear motion through an adjustable concentric crank mechanism. This...

Flow Adjustment: The V2” and 34” bellows modules can be adjusted to 20% of maximum stroke length, while 1”, 1-1/2” and 2” bellows modules can be adjusted down to 10% of maximum stroke. Note: Best priming and metering accuracy occurs when the stroke length is 50% or greater. Standard Crank - Adjustment cannot be made while pump is operating. An adjusting screw changes the stroke length of an eccentric crank. Mini Bellows Metering Pump Specifications: Average Repeatability - From stroke-to-stroke ± 0.75% Flow Rates - Range to 270 ml/min, Tandem models range to 432 ml/min Max Discharge Pressure...

Gearmotors: The standard motor available for the Mini Bellows Pump is an AC voltage synchronous motor. Motors are UL recognized and continuous duty rated and are available in 115V, 50/60 Hz or 230V, 50/60 Hz. Materials in Contact with Solution: Connectors - Polypropylene O-Rings (Elastomers) - EPT/EPDM or Viton®/Fluoroelastomer Poppet - EPT/EPDM or Viton®/Fluoroelastomer Bellows - Standard Polypropylene Materials Additional materials available, refer to OEM Section for details. Mini Bellows Metering Pump Selection: The pump selection procedure is detailed in the Mini Bellows Metering Pump Selection...

PUMPS Pump Selection GuideSingle Mini Bellows Pumps Select a bellows size that meets your pressure requirements. Select a model with the bellows size that provides your required flow while operating closest to full stroke capacity. Best metering accuracy occurs when bellows modules operate at 50% or more of maximum output. For 24 hour continuous duty service, use one of the heavy-duty models. Select a valve and O-ring combination and tubing connectors for each bellows from the selection charts. Specify duckbill valves if heavy slurries or fibrous materials are being pumped. Order Notes: When...

Pump Selection Guide Single Mini Bellows Pumps Continued from previous pageCHART G SELECTED SINGLE MINI BELLOWS PUMPS For flows of 1800 ml/min and above. V2” I.D. tubing connectors recommended. *Use of 4mm connector is limited by flow rate; please contact factory with specifications. **Cost added for connector. Tubing Connectors (T-Codes)

PUMPS Pump Selection GuideTandem Mini Bellows Pumps Select a bellows size that meets your pressure requirements. Select a model with the bellows size that provides your required flow while operating closest to full stroke capacity. Best metering accuracy occurs when bellows modules operate at 50% or more of maximum output. For 24 hour continuous duty service, use one of the heavy-duty models. Select a valve and O-ring combination and tubing connectors for each bellows from the selection charts. Specify duckbill valves if heavy slurries or fibrous materials are being pumped. Order Notes: When...

Pump Selection Guide Tandem Mini Bellows Pumps Continued from previous page CHART F SELECTED TANDEM MINI BELLOWS PUMPS For flows of 1800 ml/min and above. V2” I.D. tubing connectors recommended. *Use of 4mm connector is limited by flow rate; please contact factory with specifications. "Cost added for connector. Tubing Connectors (T-Codes) 180 Hines Ave. • Bellville, OH 44813 • PH: 419-886-3001 • FAX: 419-886-2338 • www.GRIpumps.com

Options Mini Bellows GRI specializes in the adaptation of standard models to meet the ever-changing needs of the Original Equipment Market. Contact us if one of our standard models does not meet your specific requirements. Motors • Speeds Standard synchronous motor speeds are 8, 12, 15 and 24 RPM at 60 Hz. Shaded pole motor speeds can be supplied in virtually any speed up to a maximum of 90 RPM. • Voltages Standard voltages are 115V, 50/60 Hz or 230V, 50/60 Hz. However, the following special voltages are also available: 12 and 24VDC. • Designs The standard motor is an AC voltage synchronous motor....

Mini Bellows Poppet Valves & O-Rings The standard elastomers for the poppet valves and O-rings are EPT/EPDM and Viton®/Fluoroelastomer. These elastomers have historically been able to handle the vast majority of the applications in which we’ve been involved. However, Butyl, Hydrin, Kel-F®, Silicone and Nitrile 1 /2” Poppet Kit can be supplied for chemicals requiring such materials. Duckbill Valves & O-Rings Duckbill valves are required in those applications where heavy slurries and fibrous materials are being pumped. Heavy slurries should be flushed from the bellows before pump is shut down....

PUMPS AccessoriesMini Bellows Check and Foot Valves Check and foot valves are used to maintain a pump’s prime or to prevent backflow through a pump in applications with long suction lengths. Check valves can be positioned in-line on the suction or discharge side of the pump; foot valves on the suction side only. To order, refer to the chart on this page. Single Check Valve Opening Pressure: 1 psi (spring loaded) Materials in Contact with Solution: • Body, valve seat, connectors, screen (149 Micron) - Polypropylene • O-rings - EPT/EPDM, Viton®/Fluoro-elastomer • Spring - Hastelloy® C Options:...