FLOJET

The diaphragm, check valve, and seat materials determine chemical compatibility and temperature range. Santoprene is generally used for water, mild chemicals, and non-abrasive fluids. FKM (fluoroelastomer) provides resistance to oils, fuels, and many aggressive chemicals at moderate temperatures. FFKM (perfluoroelastomer) offers the broadest chemical resistance and higher temperature capability among the three. When selecting a FLOJET compact AODD pump, match the wetted materials to the fluid being pumped and confirm with a chemical compatibility chart. The polypropylene housing is common across these models; the material variation is in the diaphragm, check valve, and seat.

In the 3G Electric catalog, FLOJET polypropylene-housing AODD models are listed with maximum flow rates up to 5 gpm, depending on connection size and configuration. Actual flow depends on air supply pressure, fluid viscosity, suction lift, and discharge head. The 1/2 in barbed connection models are typically specified at 5 gpm maximum, while 3/8 in models may have lower maximum flow. For a specific duty point, provide the required flow, fluid viscosity, and available air pressure so the pump can be matched to the application.

Air-operated double-diaphragm pumps are generally self-priming and can run dry for limited periods without damage because the diaphragms are the only moving wetted parts and are not lubricated by the process fluid. FLOJET compact AODD models in this range are used in intermittent dispensing and transfer applications where dry running may occur. However, continuous dry running can shorten diaphragm life, and suction lift capability depends on the specific model and air pressure. Confirm the pump's rated suction lift and operating limits for the intended duty.

The listed FLOJET compact AODD dispensing pumps use barbed connections, primarily 3/8 in and 1/2 in. Barbed connections are intended for flexible tubing and are common in dispensing, sprayer, and transfer systems where quick assembly and disassembly are needed. The connection size affects maximum flow rate and pressure drop. For higher flow, the 1/2 in models are typically selected; for lower flow or tighter tubing runs, 3/8 in models are used. Verify the tubing material and clamp method are compatible with the fluid and pressure.

3G Electric stocks FLOJET pumps and related parts, and can quote replacement diaphragms, check valves, and seats in the material combinations shown in the catalog, including Santoprene, FKM, FFKM, and polypropylene. When requesting parts, provide the manufacturer part number (MPN) from the pump nameplate or the original order, and specify the wetted-material set required. Because the same pump body may be configured with different elastomers, the MPN is the most reliable identifier. Additional FLOJET models and spares not listed online can be sourced on request.

FLOJET compact AODD pumps are air-driven and typically operate on compressed air at pressures in the range of 20 to 100 psi, depending on the model and desired flow. The pump will start and cycle at lower pressures but will produce lower flow; maximum flow is achieved at higher air pressure within the rated limit. Air consumption varies with cycle rate and discharge head. For a specific model, consult the manufacturer's performance curve or contact 3G Electric with the required flow and available air pressure to confirm the operating point.