When you're shopping for a hydraulics pneumatics setup, the first real fork in the road is simple: do you need a bare pump to build into your own circuit, or do you want a self-contained power unit that comes with the motor and reservoir attached? The Dynamic Fluid Components GP-F20-08-P1-A hydraulic gear pump and the Hydraulic Power Unit 12V Double Acting Pump 6 Quart are two very different answers to that question. The GP-F20 is a component priced at $191.62, while the 12V unit is listed at $160.
Quick verdict
Choose the Dynamic Fluid Components GP-F20-08-P1-A if you want a component-level pump with clearly defined specs and are comfortable building the rest of the hydraulic system around it. Choose the Hydraulic Power Unit 12V Double Acting Pump 6 Quart if you want a unit that handles both directions of cylinder movement in one package.
At a glance
| Feature | Dynamic Fluid Components GP-F20-08-P1-A | Hydraulic Power Unit 12V Double Acting Pump 6 Quart |
|---|---|---|
| Price | USD 191.62 | USD 160.00 |
| Power source | Pneumatic | Electric |
| Pump action | Single acting | Double acting |
| Pump type | Hydraulic gear pump | Hydraulic gear pump |
| Condition | New | New - Open box |
Where each product wins
- Dynamic Fluid Components GP-F20-08-P1-A wins if you're assembling a custom hydraulic circuit and want a pump with clearly specified engineering specs.
- Hydraulic Power Unit 12V Double Acting Pump 6 Quart wins if you want a complete power unit rather than a component to build around.
Product notes
Dynamic Fluid Components GP-F20-08-P1-A

The GP-F20 is a bare hydraulic gear pump built for people who are designing their own hydraulic circuit. The specs are the story: 0.48 in3/rev displacement, 3650 psi maximum pressure, a rated speed of 2000 rpm, a max speed of 3600 rpm, and SAE-12 inlet/SAE-10 outlet ports. The aluminium center section with cast iron end plates is a standard construction for this style of pump, and the unit is made in the United States. The limitation is that this is a component, not a complete power unit: it is single acting and pneumatically powered, so it fits into a system that supplies the driving force and the rest of the hydraulic circuit.
Hydraulic Power Unit 12V Double Acting Pump 6 Quart

This unit flips the approach by bundling the pump with a 6-quart reservoir and running on 12V electric power. The double acting action lets it move a cylinder in both directions, which is what many hydraulic applications need. It is a single package rather than a collection of components. The trade-off is condition: the listing shows New - Open box, so the unit is new but the box has been opened. That's the main thing to weigh if you prefer factory-sealed packaging. This power unit gives you the core pump-and-reservoir arrangement in one purchase.
Final choice by use case
If you are designing a circuit around a specific pump specification, go with the Dynamic Fluid Components GP-F20-08-P1-A. If your project is powered by 12V and you want the convenience of an all-in-one unit, the Hydraulic Power Unit 12V Double Acting Pump 6 Quart is the more practical fit.