Oscillating diaphragm pumps are self-priming, corrosion resistant, have no dynamic seals and are constructed from FDA accepted materials.
Typical applications include detergent dispensing, chemical mixing, dish and glass washers, ice machines, analytical instruments, medical and laboratory instruments, and chiller applications.
These pumps are intended for replenishing, transfer and circulating installations.
Oscillating Diaphragm Pump Operation: An elastomeric diaphragm is attached to an armature assembly, which extends into an electric coil. A diode in the circuit feeds DC impulses to the electrical coil 60 times per second. Each pulse draws the armature and diaphragm toward the pump head discharging liquid through the duckbill portion of a combination valve and out the discharge port. The springs then return the armature and diaphragm pulling liquid in past the umbrella portion of the valve from the inlet of the pump. Each portion of the combination valve presents back flow as the diaphragm movement provides the positive displacement.
Pump Specifications: Flow Rates — To 350 ml/min. 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 35 psi Self-Priming — To 5 feet (1.5 m) Max Fluid Temperature — To 104°F (40°C), higher temperatures with intermediate continuous duty. Weight — Approximately 1 lb. Coils — For AC, requires diode (included with listed models).
115V, 50/60 Hz
230V, 50/60 Hz Agency Approvals — FDA listed materials for models listed in chart.
Materials in Contact with Solution: Silicone & EPT as standard. See series charts or consult factory for material options.
Refer to the Chemical Resistance Section to help determine compatibility. (Use only elastomers with “A” rating.)
Features
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Self-Priming
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No dynamic seals
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Compact
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Lightweight
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Economical
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Can operate continuously
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Moisture & corrosion resistant coil
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Unique duckbill/umbrella valve, no external sealing, less room for failure
OEM Options
Coils, Leads and Terminals
Generally, electrical coils are available in 115V or 230V. However, pumps can be supplied with DC motors for pulse with modulated signals. 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 24 inch leads with 1/4 inch female spade terminals.
Mounting Options
The oscillating diaphragm pump can be provided with two mounting styles. The spring mounted model is more efficient and transmits less vibration to the mounting structure. Direct mount transmits vibration to equipment and may be slightly less efficient; however, it's less expensive and consumes a smaller space.
