These mini-pumps are driven by an air-powered
motor and can be connected to any supply source of
compressed air. These compact low-cost pumps can
operate all single-acting or double-acting hydraulic
cylinders up to a max. operating pressure of 700 bar.
Due to large reservoirs, large cylinders or multiple
cylinders can be operated. The use of an inline air
filter-lubricator is recommended.
The hydraulic pressure can be infinitely adjusted on
the regulator of the air-lubricator unit. The air-driven
motor guarantees 100 % explosion protection.
Pumps for double-acting hydraulic cylinders are equipped with an additional 4-way control valve type
VHH-4/3. The connected hydraulic cylinder is controlled
- advance - stop - return - by the universal pedal,
which can be either hand or foot-operated.

Control of cylinder motion
- Pedal in neutral position - motor stands still, cylinder stands, pressure is held.
- Pedal depressed - motor starts, cylinder advances, pressure is built-up.
- Pedal pushed forward - motor stands still, pressure is released, cylinder retracts