VEVOR 12V Double-Acting Hydraulic Pump, 4 Quart: specs and what it powers

The VEVOR 4 Quart Double-Acting Hydraulic Pump is a self-contained 12V DC power unit. A motor, pump, valve block and metal oil reservoir are combined in one assembly that drives a hydraulic cylinder. It is typically fitted to dump trailers, tailgate lifts and similar equipment that needs to raise and lower a load from a vehicle battery.

What a hydraulic power unit does

A power unit pushes oil under pressure to a cylinder, which extends and moves the load. When the oil returns, the cylinder retracts. The motor here runs from a 12V battery, so it can be installed on a trailer or truck without a mains supply.

Double-acting explained

Double-acting means that oil is powered in both directions: pressure drives the cylinder out on one port and back in on the other. That is different from a single-acting unit, where the load's own weight pushes the cylinder back down. VEVOR says its double action gives a quick, positive lift and lower, and the listing refers to the A and B ports for the two directions.

Motor, flow and pressure

The listing describes a 12V, 1.6kW DC motor with a standard-duty classification. Key figures from VEVOR:

• Flow rate: up to 0.91 GPM.
• Relief setting: a maximum of 3,200 PSI on the A port and 1,500 PSI on the B port.
• Connections: SAE #6 ports, with two additional SAE #6 connectors provided as spares.

Relief settings protect the system by limiting the pressure it can build. The lower figure on the B port fits many dump trailers, where the retract side needs less pressure than the lift side. Your cylinder's maximum pressure should always be compared with these figures.

Reservoir and mounting

The metal reservoir holds 4 quarts of oil, and VEVOR says the unit can be mounted vertically or horizontally. A metal tank is sturdier than a plastic one on a vehicle exposed to knocks and heat. VEVOR also says the materials resist corrosion and wear for a longer life. The unit measures about 21.3 x 11.4 x 11.4 inches and weighs about 28 lb (12.7 kg).

The 15 ft pendant

A 15 ft remote pendant has up and down controls, so you can operate the lift from a safe distance and see the load as it moves. VEVOR notes that the positive and negative leads must be connected to the battery correctly, so follow the wiring instructions in the manual.

Where it is used

VEVOR lists truck tailgate lifts, scissor lifts, dump trailers, snowplows, aerial platforms, road signs, material handling and wheelchair lifts as typical applications, along with any use that requires extending a hydraulic cylinder.

What to check before you buy

• Cylinder match: check the bore, stroke and maximum pressure of your cylinder against the flow and relief figures.
• Ports and hoses: confirm that the SAE #6 ports fit your hoses and fittings.
• Battery and cable: ensure that your battery and cable gauge can supply the motor's current.
• Duty cycle: it is a standard-duty motor, so consider how often and how long it will run.
• Oil: check the manual for the recommended hydraulic fluid.
• Safety: lifts hold heavy loads, so follow the manual and use mechanical supports when working underneath.

The short version

• A 12V DC, 1.6kW double-acting hydraulic power unit with a 4 quart metal reservoir.
• Up to 0.91 GPM, with relief settings of 3,200 PSI (A port) and 1,500 PSI (B port).
• SAE #6 ports, two spare connectors, and a 15 ft up/down pendant.
• Mounts vertically or horizontally.
• Used for dump trailers, tailgate lifts, scissor lifts and similar equipment.

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