Pneumatic and hydraulic pumps are used to autonomously generate vacuum or pressure in small volumes to carry out checks and calibration on meters and pressure gauges with the standard instruments.
They are suitable for use in laboratories or on the field, as they do not require external power-supply sources. They can come with a full series of analogue and digital pressure gauges used as reference instruments for the generated signal.
The pumps are fitted with two opposite levers, to quickly generate the required value, and a fine volume regulator for fine adjustments. A needle valve ensure an accurate pressure control.
The pneumatic pumps compress the air. The hydraulic pumps have a built-in tank that contains the pressurisation liquid (water or oil).
