The Additel ADT 912A Low Pressure Test Pump is a hand-operated pressure pump designed to generate pressure from -14psi (-0.95bar, 95% vacuum) to 60psi (4bar). A high-precision screw press is built in for fine pressure adjustment, delivering an industry-leading adjustment resolution up to 0.01 Pa (0.0001 mbar).

To ensure maximum pressure stability during micro-pressure calibration, the pump is equipped with an isothermal bellows chamber to reduce the impact of environmental temperature fluctuations, paired with a specially designed shut-off valve to maintain steady pressure throughout the calibration process. A built-in gas-liquid isolator protects the pump internals from moisture and dirt, reducing long-term maintenance requirements. Two pre-installed hand-tight quick connectors enable easy, tool-free connection and disconnection, with no need for PTFE tape or wrenches. The ADT 912A is an ideal comparative test pump for low and micro-pressure calibration applications.

Features

• 6.2 pounds lightweight portable design
• 0.01 Pa (0.0001 mbar) ultra-fine pressure adjustment resolution
• Operating range: 95% vacuum to 60 psi (4 bar) positive pressure
• Tool-free hand-tight quick connectors for fast setup
• Isothermal bellows chamber to minimize temperature-induced pressure fluctuations
• Built-in gas-liquid isolator for internal component protection and reduced maintenance
• High-precision screw press for smooth, accurate pressure tuning
• Specialized shut-off valve for superior pressure stability during calibration