| Mounting | Base Mounted |
| Series | SP |
| Oil Reservoir | false |
| Manual Pressure Release Valve | No |
| Body Material | Steel |
| Piston | Hard Chrome Plated |
| Maximum Pressure Rating | 1500 PSI |
| Piston Diameter | 1 1/4 in |
| Volume per Stroke | 1.84 in3 |
| Lever Load per 100 PSI | 7.7 lb |
| Inlet Port Size (NPTF) | 3/8 |
| Outlet Port Size (NPTF) | 3/8 in |
| Net Weight | 10 lb |
| Operating Lever Size | 24 in |
SP4A (Stock)
Without Oil Reservoir
Without Adjustable Overload Relief Valve
Without Manual Pressure Release Valve
These pumps, either base or flange mounted style, have only check valves. They have no reservoirs, overload, relief, or release valves, and are used on equipment that has its own reservoir and control valves. These pumps provide a low cost efficient means for manually developing or increasing pressure in a hydraulic system. In emergencies they furnish reliable hydraulic power to operate presses, valves, doors, safety locks and other devices.
- Maximum pressure 10000 PSI
- Pistons ground and hard chrome plated
- All steel pump bodies
- 24″ operating lever included with hand pump
- Stainless steel models available
Downloads
- Limited Warranty
All Star pumps are covered by a limited warranty on materials and workmanship for one year from the date of manufacture. Star will repair or replace at its option any pump in which Star finds manufacturing defects. In order to get warranty service a pump must be returned to the Star plant freight prepaid with a written explanation of the problem.
Technical Data
Light hydraulic oil is recommended for use with Star pumps. Oils with SUS viscosity of 75 to 150 at 100 degrees Fahrenheit will give satisfactory performance (ISO grade 15, 22, or 32). In an emergency situation when the above oils are not available, use 5 W or 10 W motor oil or automatic transmission fluid.
All exposed surfaces of standard Star pumps are painted with one coat of industrial quality paint. Pumps painted with special colors with two coat finishes, or with prime coat only, and pumps with special plated or polished parts, are also available.