Oscillating Pumps

Product Overview

Oscillating pumps are self-priming, corrosion resistant, have no dynamic seals and are constructed from FDA accepted materials.

Typical applications include film and microfilm processors; litho and graphic arts plate processors; detergent dispensing, chemical mixing, medical, scientific and laboratory equipment.

These pumps are intended for replenishing, transfer and circulating installations.

Oscillating Pump Operation: 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.

Pump Specifications:
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 pound
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.

Materials in Contact with Solution: EPT/EPDM & Glass-Reinforced Polypropylene.

Refer to the Chemical Resistance Section to help determine compatibility. (Use only elastomers with “A” rating for standard oscillating pumps.)

For aggressive-chemistry applications, contact GRI for special Glass-Ball Center Valve Oscillating Pumps (U.S. Patent 5,567,131).

OEM Options:
GRI specializes in the design and manufacturing of customized pumps for the OEM market. Click here to see a listing of available OEM options.

Features

•	Self-priming	•	No dynamic seals
•	Compact	•	Lightweight
•	Economical	•	Can operate continuously
•	Spring styles: Leaf Spring - extremely quiet	•	Moisture & corrosion resistant coil
•	Spring styles: Coil Spring - higher flow & efficiency, greater priming ability	•	Outlet valve styles: Poppet - prevents backflow thru pump
•	Outlet valve styles: 2-Piece allows higher flow; no backflow prevention

Performance by Product Series
14825 Series Leaf-style spring models for quieter operation Service Data Sheet

14925 Series Laboratory mounting base models designed for stand-alone operation

15000 Series Coil-style spring models with a poppet outlet valve to eliminate backflow Service Data Sheet

17000 Series Coil-style spring models with 2-piece outlet valve for maximum flow rates Service Data Sheet

OEM Options
Valve Styles
To modify the priming or performance characteristics of the pump, two valve options are available: poppet valve or 2-piece valve. The poppet valve provides the best priming capability and more positively prevents backflow through the pump. The 2-piece valve generally delivers higher flows than the poppet valve. Note: Valves are utilized on the discharge side of the pump. However, to more closely meet a customer's specifications, valves can be used on both the inlet and outlet side.
Tubing Connectors - 15467-004
1/8" - 3/16" I.D. Tubing
Tubing Connectors - 15467-006
1/4" I.D. Tubing
Tubing Connectors - 11356-000
3/8" I.D. Tubing
Tubing Connectors - 11973
3/8" I.D. Tubing 11973-000 (Polypropylene – Black) 11973-006 (Glass-Filed Noryl^® – Gray)
Tubing Connectors - 11252-000
1/2" I.D. Tubing
Tubing Connectors - 11687
1/2" I.D. Tubing 11687-000 (Polypropylene - Black) 11687-002 (Glass-Filled Noryl^® - Gray)
Tubing Connectors - 15467-003
1/8" - 3/16" I.D. Tubing
Tubing Connectors - 15467
1/4" I.D. Tubing 15467-005 (Polypropylene - Black) 15467-013 (LCP - Almond)
Tubing Connectors - 15467-002
3/8" I.D. Tubing
Tubing Connectors - 15467-001
1/2" I.D. Tubing
Coils, Leads and Terminals
Generally, electrical coils are available in 115V or 220V and 60 Hz. However, pumps have been supplied with 115V or 220V, 50 Hz coils, and with 12, 24, and 48 volt AC coils. In addition, coils can be constructed with different power capabilities to more effectively meet customer's duty cycle needs. Leads can be up to 6 feet long with any termination. Most common are 6 inch leads with 1/4 inch male spade terminals.
Mounting Options
Rubber Mount Spring Mount with Base Spring Mount The oscillating pump can be provided with three mounting styles. The rubber mount design is more compact and less expensive; however, flow rate, priming capability and discharge head are lower than the spring mounted pumps. The spring mounted model is more efficient and transmits less vibration to the mounting structure.