Oscillating pumps made by GRI 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.
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