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In dynamic industrial environments—such as elevated scaffolding work, remote pipeline trenches, or cramped ship engine rooms—deploying a heavy-duty hydraulic pump is often physically impractical. Conversely, ultra-micro pumps lack the fluid capacity to drive multiple tools or mid-sized cylinders. The Zupper CP-390 bridges this operational gap.
Engineered as a mid-range, two-speed manual hydraulic power unit, the manual hydraulic pump CP-390 delivers a maximum pressure of 700 bar (10,000 psi) within a highly portable, rugged steel housing. It is the optimal power source for maintenance engineers who require mobility without sacrificing lifting or crimping capability.

Zupper manual hydraulic hand pump CP-390
The core advantage of the CP-390 lies in its balanced oil reservoir. With a usable oil capacity designed for mid-range tools, it serves as a versatile power hub for various field applications:
Driving low-profile and short-stroke cylinders: Perfectly matched for the Zupper RMC series (flat jacks) or short-stroke hollow cylinders (like the RCH-2050). It provides enough fluid to fully extend these rams without the risk of severe over-pressurization common when using oversized 700cc pumps.
Powering split-unit crimpers and cutters: Highly effective for electrical contractors operating remote hydraulic crimping heads or cable cutters where battery-powered tools are unavailable or unsafe (e.g., spark-free environments).
To maximize field efficiency and prevent system cavitation, operators must understand the internal mechanics of this specific pump:
Automatic two-stage pumping: The hydraulic pump CP-390 features a high-flow/low-pressure stage and a low-flow/high-pressure stage. During the initial pumping phase, it moves a large volume of oil to quickly advance the cylinder ram to the load. Once resistance is met, an internal bypass valve automatically shifts the pump into the 700-bar high-pressure stage, allowing the operator to lift heavy loads with minimal handle effort and maximum micro-millimeter precision.
The oil starvation hazard: The CP-390 contains a moderate oil reservoir. Do not attempt to pair this pump with high-capacity, long-stroke cylinders (such as 50-ton jacks or 100mm extended stroke models). Extracting more oil than the reservoir holds will draw air into the hydraulic lines, causing spongy cylinder movement, load dropping, and requiring a complete system bleed.

Please verify your cylinder's required oil volume against the CP-390's capacity before integration:
| Technical Parameter | Metric Value |
| Model | Zupper CP-390 |
| Pump classification | Manual, two-speed, single-acting |
| Maximum operating pressure | 700 bar (10,000 psi) |
| Usable oil capacity | 390 cc |
| Valve type | Manual pressure release knob |
| Housing material | Welded heavy-duty steel |
| Origin | China |
| Warranty | 24 months |
| Gross mass | 5.5 kg |
To ensure a closed-loop, safe hydraulic system, we highly recommend pairing the CP-390 with the following Zupper equipment:
The ideal pairing for confined space machinery leveling and pipeline flange separation. The two-speed pump action allows the flat jack to rapidly engage the load before applying precise, controlled pressure.
Asia Pro Equip supplies certified, Japanese-standard hydraulic power units to the most rigorous M&E and civil construction sectors. We maintain strategic, ready-to-deploy inventory of the Zupper CP-390 within our regional logistics hubs, ensuring your field teams have the power they need without international shipping delays.
Operating on a strictly transparent corporate pricing model, our technical sales division is ready to process your RFQ and verify oil volume compatibilities for your specific tool fleet.
Corporate Sales & RFQ: [email protected]
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