180 Hines Ave. • Bellville, OH 44813 • PH: 419-886-3001 • FAX: 419-886-2338 • www.GRIpumps.com GRI Compact Bellows

Compact Bellows Metering Pumps Overview GRI’s line of Compact Bellows Metering Pumps were specifically designed for metering applications requiring low discharge pressures. Compact pumps have been successfully applied in photo, X-ray and dental film processors; silver recovery; and scientific and analytical instruments. The compact bellows pumps utilize GRI’s proven bellows and valving technology to provide an accurate and economical metering pump with long life. The proprietary blended polypropylene materials of construction and a wide selection of valve and O-ring elastomers produce chemical...

Flow Rates: The flow rate of each pump is regulated by three factors: 1. Diameter of the bellows, 2. Speed of the gearmotor, 3. Adjustment of the module stroke length. The full stroke displacement and discharge pressure of the pump is dependent on the size of the bellows as shown below. If higher discharge pressure is required, please consult factory for an OEM solution.* COMPACT BELLOWS MODULE FLOW RATE CHART Bellows Size Full Stroke Displacement (ml) Max Discharge Pressure (psi) Motor RPM Flow Adjustment: The ½” and ¾” bellows modules can be adjusted to 20% of maximum stroke length, while 1”,...

MAXIMUM DRY AND WET PRIMING SPECIFICATIONS • Feet (Meters) Bellows Sizes Dry Prime 50% of Full Stroke Dry Prime 100% of Full Stroke Wet Prime 50% of Full Stroke Wet Prime 100% of Full Stroke Note: All testing is done with water at an ambient temperature of 80 degree F. If specific gravity or viscosity of fluid being pumped is significantly greater than water (1.0), please consult factory. Gearmotors: Catalog gearmotors are available in 115V, 50/60 Hz or 220V, 50/60 Hz. Standard motor speeds are 45.6 and 90 RPM at 60 Hz and 38 and 75 RPM at 50 Hz. Motors are UL recognized and continuous duty rated...

Pump Selection Guide Compact Bellows Pumps The Compact Bellows Metering Pumps are designed for applications with low pressure requirements. Maximum discharge pressure to 5 psi. Pumps are only available with standard crank mechanism. Pumps with up to four (4) bellow modules are available. Flow rate for each module is independently adjustable. Order Notes: When ordering a compact bellows model, refer to the Pump Selection Process steps 1 through 6 and follow the example provided below. Example: The model number and code for a 4-Tandem Pump with 1-1/2”, 1”, 1, and 1/2” bellows, Viton® elastomers...

Continued from previous page Pump Selection Process: 4. Using Chart D, select appropriate F-Code according to each bellow’s module size, valve type and elastomer. Note: The largest bellows module will be configured closest to the motor. 5. Using Chart E, select one T-Code for each F-Code chosen from Chart D. 6. Optional: Place desired H-Code from Chart F at end of model number. Without an H-Code, the pump will be have exposed motor and bare wire leads. CHART D: F-Codes - Bellows, Valve Type and O-ring Material Selection Options Bellows Size Poppet EPT/EPDM Poppet Viton® CHART E: T-Codes – Tubing...

Compact 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. Standard motor speeds are 45.6 and 90 RPM at 60 Hz. Motors can be supplied in virtually any speed up to a maximum of 120 RPM. Standard voltages are 115V, 50/60 Hz, or 230V, 50/60 Hz. However, the following special voltages are also available: 12 and 24VDC, or 24VAC. The standard motor is an open, shaded pole gearmotor. Motors are also available in steppers, and DC. Motors can be...

Miscellaneous Options Compact Bellows Other options available for the compact bellows pumps include duckbill valves, miniature switches to count strokes, stainless steel mounting brackets and splash covers. 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...

Compact Bellows Check and Foot Valves Single Check 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. Dual Check Valves Foot Valves O-Ring (Elastomer) Material Spring Single Check Valve Dual Check Valve Opening Pressure: 1 psi (spring loaded) Opening Pressure: Monel .2 psi (two poppets 02501-112 Materials in Contact with Solution: located...

Replacement Kits Compact Bellows Duckbill valve kit includes two duckbill valves, two seal washers, one valve extension and one O-ring. Poppet valve kit includes two poppet valves and two O-rings. Bellows module kits include connecting rod assembly, bellows module, displacement cup, screws and O-rings. Tubing Connector kit includes two connectors and two connector nuts. Compact Crank Kit includes one set screw, one retaining ring and one crank assembly. Ordering Kits To order, refer to Replacement Kit charts on following page. 180 Hines Ave. • Bellville, OH 44813 • PH: 419-886-3001 • FAX: 419-886-2338...

Replacement Kits Compact Bellows / ” & 3/4” Bellows Module Kits Base Model Number Viton®/ Fluoroelastomer Viton®/ Fluoroelastomer 1” & 1 1/2” Bellows Module Kits 1” Bellows Base Model Number 2” Bellows Module Kits Viton®/ Fluoroelastomer Viton®/ Fluoroelastomer Base Model Number Viton®/ Fluoroelastomer Crank Kits Bellows Size Tubing Connector Kits Poppet Valve & O-Ring Kits /2” Bellows Base Model Number Viton / Fluoroelastomer Viton / Fluoroelastomer 180 Hines Ave. • Bellville, OH 44813 • PH: 419-886-3001 • FAX: 419-886-2338 • www.G