The 901B Low Pressure Test Pump is a hand operated pressure pump designed to generate pressures from -6 PSI to 6 PSI. A high-quality screw press is designed for fine pressure adjustment, with an adjustment resolution up to 0.1 Pa. The 901B is a very stable low pressure calibrator. It makes use of an isothermal bellows chamber which is designed for reducing the possible effects of environmental temperature change.
Two hand-tight connectors installed on the pump allow easy connecting and disconnecting to the test pump without the need for PTFE tape or wrenches. The 901B is an ideal comparison test pump for low pressure applications.