Choosing between the 120PSI air-operated diaphragm pump and the HGP-3A-F11R hydraulic gear pump for industrial pump flow control comes down to one question: are you moving fluids, or are you supplying hydraulic power? The first pump is built for liquid transfer; the second is built to be a hydraulic power source. Both are new units, but they are not interchangeable. The right choice depends on whether your priority is flow volume or hydraulic pressure.
Quick Verdict
The 120PSI Industrial Chemical Air-Operated Double Diaphragm Pump is the lower-priced pick for fluid handling. The Brand New Hydraulic Gear Pump HGP-3A-F11R is the one to choose when your equipment needs hydraulic pressure. Match the pump to the job rather than to the price tag.
Comparison Table
| Product | Listed Price | Price Bar | Key Specs |
|---|---|---|---|
| 120PSI Industrial Chemical Air-Operated Double Diaphragm Pump 1" Inlet+Outlet | USD 126.01 | 1" inlet/outlet, 35 GPM, 120 PSI, 38 CFM air consumption | |
| Brand New Hydraulic Gear Pump HGP-3A-F11R 11cc for Forklift Industrial Equipment | USD 164.99 | 11 mL/rev, 21 MPa rated pressure, 3000 RPM max speed |
Where the Diaphragm Pump Wins
The air-operated pump is the lower-priced option and is designed for fluid transfer. It runs on compressed air, so it can be a good fit for a shop that already has air lines. This side of the comparison wins when the task is moving liquids rather than generating hydraulic pressure.
Where the Gear Pump Wins
The HGP-3A-F11R is the hydraulic specialist. It is listed at the higher price point, but it delivers pressurized oil flow. That makes it the pump to use when your application is hydraulic power rather than liquid transfer.
Product Notes
120PSI Industrial Chemical Air-Operated Double Diaphragm Pump 1" Inlet+Outlet
This is the pump to pick when the task is moving liquid from point A to point B. It moves up to 35 gallons per minute at up to 120 PSI, and the 1-inch inlet and outlet keep the connections sized for real flow. The nitrile diaphragm is a sensible match for petroleum fluids, and the acetal ball supports the valving. One concrete reason to choose it: if you already have compressed air, you can put this pump to work through the 1/2-inch NPT air inlet without adding another drive. The limitation is that it needs 38 CFM of air, so the pump is only as dependable as your compressor.
Brand New Hydraulic Gear Pump HGP-3A-F11R 11cc for Forklift Industrial Equipment
This gear pump is the right choice when the job is creating hydraulic flow rather than transferring liquids. It has a displacement of 11 mL/rev, a rated working pressure of 21 MPa, and a peak intermittent pressure of 25 MPa (3626 PSI). It is built for equipment like forklifts, pallet trucks, skid steer loaders, and other machinery that relies on hydraulic power. The concrete reason to choose it is the fixed displacement: each revolution moves a predictable volume of oil, and the 3000 RPM maximum speed gives a clear operating ceiling. The limitation is that it is a component for a hydraulic system, so you need the rest of the circuit around it to make it useful.
Final Choice by Use Case
Choose the 120PSI Industrial Chemical Air-Operated Double Diaphragm Pump for liquid-transfer jobs. Choose the Brand New Hydraulic Gear Pump HGP-3A-F11R for hydraulic-power applications.
