Single Acting Hydraulic Power Unit for Dump Trailers
Product Description
Product Detail
The HCPGS single acting hydraulic power unit for dump trailers is designed for circuits that power the lifting direction and use the machine's own weight or a separate return arrangement for lowering. The HCIC catalog lists this model as a single-acting unit with 1.2 GPM flow, an SAE #6 port, a 4-gallon tank, 3,000 PSI and a solenoid-operated 2-way, 2-position valve.
That combination is useful when the trailer needs a straightforward power-up circuit rather than hydraulic power in both cylinder directions. The right application still depends on the cylinder, load path, trailer geometry, battery system, hose routing and control method.
I. HCPGS Specifications
| Item | Catalog information |
|---|---|
| Model | HCPGS |
| Type | Single acting |
| Flow | 1.2 GPM |
| Port size | SAE #6 |
| Tank size | 4 Gal |
| Pressure specification | 3,000 PSI |
| Valving | Solenoid operated; 2‑way, 2‑position |
| Catalog source | HCIC‑2026, page 16 |
These are catalog identification values. They should not be treated as a universal lifting capacity, guaranteed speed or complete electrical specification for every trailer.
II. How the HCPGS Circuit Works
A single-acting HPU sends pressurized oil to one working side of the cylinder. When the solenoid valve is energized, the pump supplies flow to raise or extend the connected actuator. When the command is removed, the circuit changes to its return condition according to the selected trailer design. The actual lowering behavior depends on the cylinder type, body weight, mechanical resistance, load-control arrangement and return path.
This is the main difference between a single-acting unit and a power-up/power-down circuit. If the trailer requires the HPU to drive the cylinder in both directions, the single-acting HCPGS configuration is not automatically the correct choice. The cylinder and control sequence should be checked before ordering.
III. Product Features That Matter in a Trailer Installation
3.1--Simple single-acting control
The 2-way, 2-position solenoid valve gives the HCPGS a focused control arrangement for a single-acting circuit. That can make the hydraulic schematic easier to review when the trailer only needs powered lifting and a defined lowering path.
3.2--1.2 GPM catalog flow
The listed flow is a starting point for speed estimation. Actual trailer movement depends on cylinder volume, load, valve restriction, hose length, battery condition and the flow available at the cylinder port. Do not convert the catalog flow directly into a guaranteed dump time without checking the complete system.
3.3--4-gallon tank
The 4-gallon tank provides the reservoir volume listed for this model. The required operating oil level must be checked against the cylinder volume, hose volume, installation angle, return condition and available service space. The tank value alone does not confirm that every cylinder and trailer body will be compatible.
3.4--SAE #6 port connection
The SAE #6 port must be matched with the hose, adapter and fitting standard used on the trailer. Confirm thread identification, sealing method, hose bend radius and access for tightening before the unit is installed inside a toolbox or frame compartment.
3.5--Compact trailer integration
The HCPGS is listed in HCIC's dump-trailer HPU section. For a practical installation, the buyer should still confirm mounting holes, motor and reservoir clearance, battery cable routing, remote-control location and protection from road debris.
IV. Where This HPU Fits
The HCPGS can be reviewed for dump trailers and related equipment using a single-acting hydraulic circuit. It may suit an OEM trailer build, replacement project or fleet repair when the connected cylinder and lowering method match the application.
It is not a universal replacement for a double-acting power unit. A trailer using powered retraction, a hydraulic jack circuit or a two-direction control sequence may require a different valve configuration.
V. What to Confirm Before Ordering
Send the following information with an HCPGS inquiry:
- Cylinder bore, rod diameter and stroke
- Cylinder type and mounting arrangement
- Required extension and lowering sequence
- Trailer body weight and load path information
- Battery voltage and available cable length
- Hose length, port standard and fitting details
- Available mounting space and protection requirements
- Whether the pump is shared with a jack or another hydraulic function
- Photos of the current unit and nameplate, if this is a replacement
This information allows the HPU to be reviewed as part of the trailer system instead of being selected only by tank size or pressure.
VI. FAQ
VII. Conclusion
The HCPGS single acting hydraulic power unit for dump trailers is a defined catalog option for a power-up circuit. Its key identification points are the single-acting type, 1.2 GPM flow, SAE #6 port, 4-gallon tank, 3,000 PSI specification and 2-way, 2-position solenoid valve.
For a reliable quotation, provide the cylinder data, trailer layout, electrical supply and lowering sequence. HCIC can then review whether the HCPGS configuration matches the complete hydraulic system.
VIII. About HCIC
HCIC supplies hydraulic cylinders, hydraulic power units and related hydraulic components for transportation, waste-handling, construction and industrial equipment. Final product suitability should be confirmed against the complete machine design and applicable safety requirements.