The pneumatic hydraulic pump operates with compressed air pressure ranging from 0.1–0.8 MPa (14.5–116 PSI). The pump uses a large-diameter air piston connected to a smaller hydraulic piston. When compressed air drives the air piston, the hydraulic piston generates higher pressure according to the piston area ratio.
The OS series pump adopts a single-acting pneumatic drive structure. The pump control valve automatically switches direction, allowing the pump to operate continuously. The gas drive components are made of aluminum alloy with anodized treatment to ensure good appearance and corrosion resistance.
The hydraulic pump head can be selected as carbon steel or stainless steel depending on the working medium.
| Technical Parameters | OS9 | OS17 | OS25 | OS39 | OS60 | OS80 | OS108 | OS150 | OS240 |
| Pressure Ratio | 9:1 | 17:1 | 25:1 | 39:1 | 60:1 | 80:1 | 108:1 | 150:1 | 240:1 |
| Outlet Pressure PB (bar) | 72 | 136 | 200 | 312 | 480 | 640 | 864 | 1200 | 1920 |
| Free Flow Rate (L/min) | 15.13 | 9.38 | 6.72 | 4.31 | 2.75 | 2.06 | 1.55 | 1.08 | 0.98 |
| Driven Air Pressure PL (bar) | 1–8 | 1–8 | 1–8 | 1–8 | 1–8 | 1–8 | 1–8 | 1–8 | 1–8 |
| Driven Air Port Size | ZG1/2″ | ZG1/2″ | ZG1/2″ | ZG1/2″ | ZG1/2″ | ZG1/2″ | ZG1/2″ | ZG1/2″ | ZG1/2″ |
| Medium Inlet Port Size | ZG3/4″ | ZG1/2″ | ZG1/2″ | ZG3/8″ | ZG3/8″ | ZG3/8″ | ZG3/8″ | ZG3/8″ | ZG1/4″ |
| Medium Outlet Port Size | ZG1/2″ | ZG1/2″ | ZG3/8″ | ZG1/4″ | ZG1/4″ | ZG1/4″ | M14×1.5 | M14×1.5 | M14×1.5 |
| Booster Pump Material | Aluminum Alloy / Carbon Steel / Stainless Steel |
| Max Working Frequency (times/min) | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 |
| Pump Stop Pressure PB | 9PL | 17PL | 25PL | 39PL | 60PL | 80PL | 108PL | 150PL | 240PL |
| Max Working Temperature (°C) | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 |
| Net Weight (kg) | 7.2 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7 |
| Standard Seals | Polyurethane / Nitrile Rubber |
| Length (mm) | 285 | 285 | 285 | 285 | 285 | 285 | 285 | 285 | 285 |
| Width (mm) | 140 | 140 | 140 | 140 | 140 | 140 | 140 | 140 | 140 |
| Height (mm) | 226 | 226 | 226 | 226 | 226 | 226 | 226 | 226 | 226 |
| Oil Filling Version Ordering Code | OS90L | OS170L | OS250L | OS390L | OS600L | OS800L | OS1080L | OS1500L | OS2400L |
| Water Filling Version Ordering Code | OS9WL | OS17WL | OS25WL | OS39WL | OS60WL | OS80WL | OS108WL | OS150WL | OS240WL |
| Special Inlet and Outlet (e.g., NPT) Ordering Code | OS90L-NPT | OS170L-NPT | OS250L-NPT | OS390L-NPT | OS600L-NPT | OS800L-NPT | OS1080L-NPT | OS1500L-NPT | OS2400L-NPT |
Features & Functions
- Pneumatic Drive Operation
The pump operates using compressed air without electrical power. - Pressure Intensification Principle
A large air piston drives a smaller hydraulic piston to generate high pressure according to the piston area ratio. - Automatic Reciprocating Operation
The pump control valve automatically changes direction to enable continuous operation. - Compact Structure
The pump design is compact and suitable for installation in various equipment systems. - Wide Media Compatibility
Suitable for pressurizing oil, water, and chemical media.
Product Advantages
- High Pressure Output
Capable of generating very high hydraulic pressure for testing and industrial applications. - Stable Operation
The pneumatic drive system ensures reliable and stable operation. - Corrosion Resistance
Gas drive components are made of anodized aluminum alloy. - Flexible Material Options
Pump heads can be manufactured from carbon steel or stainless steel depending on the working medium.
If you’d like to learn more about other models, please contact our customer service team.
Our Company Advantages
Highlight focuses on the design and manufacturing of pressure testing equipment and fluid control testing systems, supporting both standard models and project-based customization.
- 16+ years focused on pressure testing equipment and pneumatic boosting systems
- Annual production capacity: 1000+ sets of equipment
- 8000+ customers served
- ISO9001-based quality management implementation and stable manufacturing control
- Strong engineering team for test bench configuration, fixture matching, and technical support
- Export experience supporting international buyers with technical communication and documentation
Application Fields
pneumatic hydraulic pumps are widely used for:
- Hydraulic testing of valves, pressure vessels, and pressure switches
- Strength and fatigue testing of hydraulic components
- Pressure gauge and sensor calibration
- Water pressure burst testing
- Leak testing
- Oil well and gas emergency shut-off devices
- Providing pressure sources for various hydraulic testing equipment
Installation & Operating Conditions
Installation Position
The pump can be installed in any position.
For optimal sealing performance and longer service life, vertical installation is recommended.
Drive Air Connection
The drive air port is located outside the pump control valve.
A compressed air filter and water separator should be installed to ensure clean air supply.
Working Temperature
Standard operating temperature range:-20°C to +60°C
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