Dynex High Pressure Pumps for Difficult Conditions

Individual piston check valves direct flow from the inlet side of the pump to the outlet port in these high pressure hydraulic pumps. The positive-seating checkball valves provide better wear and high volumetric efficiency, especially at high pressure. These checkball pumps operate at pressures to 20 000 psi (1380 bar).

During checkball pump operation, a fixed-angle wobble (cam) plate rotates with the drive shaft, causing the pistons to reciprocate. During its suction stroke, each piston is filled through its inlet check valve. During compression, the inlet check valve closes and pressure in the pumping chamber rises until it exceeds load pressure. The outlet checkball then lifts off its seat and fluid is pumped out of the chamber.

Checkball Pump Advantages

The checkball pump design is ideal for hydraulic systems with demanding conditions including:

• pressure spikes
• contamination
• dirty environments
• special fluids
• extreme temperatures
• long duty cycles

These high pressure pumps accommodate more force in a smaller package. At lower pressures, the pumps provide the life and performance margin essential in critical environments.

Pump Specifications

Fixed displacement pumps -
Flows from 0.22 to 60 U.S. gpm (0,83 to 227 L/min) at 1800 rpm, 
Pressures to 20 000 psi (1380 bar)
 
Variable delivery pumps -
Maximum flows from 12.7 to 60 U.S. gpm (48,1 to 227 L/min) at 1800 rpm, 
Pressures to 8500 psi (590 bar)

Special fluid applications include:

• Wellhead Safety Control Systems
• Blowout Preventer (BOP) Systems
• Diesel Calibration Testing
• Biodiesel Fuel Production
• Hydrostatic Roll Balance Systems
• Lubrication Systems
• Hydraulic Test-Stands
• Ground Support Equipment
• Industrial Coolant Supply Systems
• Hydroform Presses