The ADT-914 Pressure Test Pump is a hand operated pressure pump designed to generate pressure from -0.95 up to 25 bar. A high-quality screw press is designed for fine pressure adjustment, with an adjustment resolution up to.1 mbar. A specially designed shut-off valve makes the pressure as stable as possible during calibration. A built-in gas-liquid isolator protects the pump from moisture and dirt to reduce the need for maintenance. Two hand-tight quick connectors installed on the pump allow easy connecting and disconnecting to the test pump without the need for PTFE tape or wrenches. The ADT-914 is an ideal comparison test pump for pressure instruments calibration.