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点击数：1445550/55R系列双速手动泵
TWO STAGE PUMPS
- The series 550/55R two-stage modular hydraulic hand pumps are designed for use with an external hydraulic reservoir. The two-stage, or "HI-LOW", feature allows the operator to displace a larger amount of fluid at lower pressures. It automatically shifts over to a smaller displacement for higher pressures. This feature dramatically reduces cycle times, and number of strokes required, for many applications.
- The 550 series pumps are designed for use in systems that utilize an external relief valve.
- The 55R series pumps incorporate a factory set, tamper resistant relief valve for those applications where an external relief is impractical or undesirable.
STANDARD FEATURES
- All Steel construction for rugged use. (The low-pressure tube is hard coat anodized aluminum)
- All o-rings – no fiber or metal gaskets to leak.
- Self-retained release screw that cannot be accidentally removed.
- Heat-treated pins and linkages for extended life.
- Ground pistons to prevent seal extrusion.
- Nitrotec treated pistons for corrosion resistance.
- 500 psig standard cross-over between large and small bores.
OPTIONAL FEATURES
- Optional seals for pumping alternate fluids.
- Manifold mounting for inlet and/or outlet.
- Operating handle length – 18 or 36 inches for various handle forces.
- Custom designs for your particular application requirements.
TWO STAGE ORDERING EXAMPLE
| Model Number | Maximum Rated Pressure | Low Pressure Piston Diameter | High Pressure Piston Diameter | Cubic Inches/Stroke | Weight | |
| Low Pressure | High Pressure | |||||
| 550-124 | 5000 | 1-1/2 | 1/2 | 2.1 | .26 | 12 |
| 550-125 | 5000 | 1-1/2 | 5/8 | 2.1 | .40 | 12 |
| 550-126 | 3500 | 1-1/2 | 3/4 | 2.1 | .58 | 12 |