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INTG1 Series Product Overview

Designed for the circulation and transfer of fluids, GRI’s Integrity Series Magnetic Drive Circulation Pumps offer a flexible and robust pumping solution to OEM fluid circulation applications. By manufacturing the motors and the majority of the pump’s components in-house, GRI has the flexibility to precisely configure an Integrity Series pump to meet an OEM’s specific flow and pressure requirements.

Equipped with an integrated 9-24 volt brushless DC motor, the INTG1 Series magnetically coupled centrifugal pumps incorporate the components into a compact, lightweight design, eliminating motor bearings and leaving the impeller assembly as the only moving part. Fewer parts promote long life, quiet operation, and low power consumption.

GRI’s DC powered pumps are ideal for a multiple of OEM applications where a small footprint is desired and high performance is expected. Applications and markets include, but are not limited to, chillers, coolers, medical devices, laser systems, alternative power units, hydronic heating and cooling, recreation and public transit vehicles, fuel cells, beverage dispensers, printing and imaging, and others.


  • Motors: 24V, Integrated Brushless DC
  • Circuit Protection: Customer should provide circuit over current protection to the pump. 1.5 amp fast-acting fuse is recommended for pumps listed below.
  • Max. System Pressure: 50 psi.
  • Max. Flow: 2.50 GPM; 9.46 LPM.
  • Max. Head: 12.80 feet; 5.5 PSI.
  • Max. Fluid Temp.: 203°F (95°C)
  • Weight: .8 lbs (363 grams).

Please see Product Resources for a printable tech sheet, which includes performance curve and pump series dimensions.

Agency Approvals

  • Contact GRI


  • RoHS 2 (2011/65/EC)

OEM Options & Features

  • 24 VDC, Brushless DC Integrated Motor
  • Magnetically Coupled (Sealless, no leaks)
  • Optional third wire (Controlled by a nominal 0-5 volt DC signal)
  • Optional submersibility
  • Compact, lightweight design
  • Only one moving part: impeller assembly
  • No motor bearings
  • Low power consumption
  • Quiet operation
  • Long life
  • Multiple intake/discharge configurations
  • Multiple OEM options

GRI specializes in the custom design and manufacturing of fluid pumps for the OEM market. The chart below is a general overview of GRI’s INTG1 Series Pumps. If you do not find a pump that meets your exact requirements, our dedicated Sales Team will work with you to create a solution specific to your application – whether it is customizing an existing pump or designing new.


  • Wetted Materials
  • Pump Body: LCP
  • Housing: PP
  • Impeller: LCP
  • Impeller Shaft: Ceramic
  • Static O-Rings: FKM (Viton®), EPDM


  • Fluid circulation/recirculation devices
  • Medical
  • Chillers and coolers, coolant
  • Laser Systems
  • Hydronic Systems
  • Recreational Vehicles & Public Transit
  • Marine
  • Fuel Cells
  • Solar thermal heating and cooling
  • Beverage Dispensers



Please Note: Testing performed in a controlled laboratory environment. Actual performance may vary (+) or (–) 10% from the information shown.


For a printable drawing, with complete specifications, please refer to the “INTG1 Series Data Sheet” in left side panel.


Model Specifications

Numbers / O-Ring
Voltage (VDC) Wires Max. Flow
Max. Head
Feet (PSI)
Ports (Inches)
INTG1-280 / EPDM 9-24 2-wire 2.50 (9.46) 12.80 (5.5) 1/2 MHB
INTG1-281 / FKM 9-24 2-wire 2.50 (9.46) 12.80 (5.5) 1/2 MHB
INTG1-284 / EPDM 9-24 2-wire 2.50 (9.46) 12.80 (5.5) 3/8 MPT
INTG1-285 / FKM 9-24 2-wire 2.50 (9.46) 12.80 (5.5) 3/8 MPT
INTG1-380 / EPDM 9-24 3-wire 2.50 (9.46) 12.80 (5.5) 1/2 MHB
INTG1-381 / FKM 9-24 3-wire 2.50 (9.46) 12.80 (5.5) 1/2 MHB
INTG1-384 / EPDM 9-24 3-wire 2.50 (9.46) 12.80 (5.5) 3/8 MPT
INTG1-385 / FKM 9-24 3-wire 2.50 (9.46) 12.80 (5.5) 3/8 MPT

3-wire: Attaching a 0-5vdc signal to the third (speed control) wire allows you to turn down and thus vary the performance of the pump as needed, given a fixed supply across the red and black wires. If the speed control wire is not connected, the pump will run full-on.
Connectors: MHB = Male Hose Barb; MPT = Male Pipe Thread
O-Ring Material: EPDM = Ethylene Propylene Diene Monomer, FKM = Fluoroelastomer.