This is a manually operated pressure source designed specifically for on-site pressure calibration. It integrates a manual pre-pressure handle, a precision screw fine-adjustment mechanism and a shut-off valve, enabling extremely stable pressure output.

Portable handheld hydraulic and pneumatic pressure calibration hand pump, designed for on-site calibration of pressure transmitters, pressure gauges and switches, with stable pressure output and wide pressure range, ideal for industrial instrument calibration and maintenance.