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.
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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.
Oscillating pumps are self-priming, corrosion resistant, have no dynamic seals, and are constructed from FDA accepted materials. Oscillating pumps are intended for replenishing, transfer, and circulating applications.
An elastomeric impeller extends through a spring and armature and into an electric coil. A diode in the circuit feeds impulses to the electrical coil 60 times per second. Each pulse draws the armature and impeller forward against the spring, causing the impeller to pump a volume of liquid out through the outlet port. The spring then returns the armature and impeller to their starting position, drawing liquid through the inlet. A valve in the impeller prevents backflow of liquid.
For a complete description of our Oscillating Pumps, please click the blue "Pump Overview & Data Sheet" button.
Typical OEM Applications include, but are not limited to:
Film and microfilm processors
Litho and graphic arts plate processors
Medical, scientific and laboratory equipment
Flow Rates: Generally range from 0.2 to 0.8 gpm – refer to performance curve. Actual flow may be higher and may vary from pump to pump. Due to this inherent characteristic, these pumps are not normally intended for metering. Discharge Head: To 8.3 feet (on standard models). Self-Priming: To 48 inches (on standard models). Fluid Temperature: To 104°F (40°C). Weight: Approximately 1 lb. Motors: 115V, 230V 50/60 Hz – requires a diode (included with listed models). Agency Approvals: Most models listed in charts provided herein bear the UL Recognized Component Mark for the United States and Canada (except 14925 Series “Lab” models). Most models also have FDA listed wetted materials of construction for use in food consumable applications. NSF materials are also available. Please consult factory for details on specific models.
For chemical compatibility with standard oscillating pumps, use only elastomers with “A” rating. For aggressive-chemistry applications, contact GRI for special Glass-Ball Center Valve Oscillating Pumps (U.S. Patent 5,567,131).
Spring styles: Leaf Spring – extremely quiet
Spring styles: Coil Spring – higher flow & efficiency, greater priming ability
Outlet valve styles: 2-Piece allows higher flow; no backflow prevention
No dynamic seals
Can operate continuously
Moisture & corrosion resistant coil
Outlet valve styles: Poppet – prevents backflow through pump