The Additel 959A is designed to generate pressure up to 40,000 PSI for the application requiring accurate pressure testing and calibration. The test pump incorporates an isolation valve which isolates the calibration volume from the check valve associated with the hand pump.
Because the check valve can often be a source of leaks and maintenance, the isolation valve provides more stable measurements and reduces potential maintenance of the pump. The Additel 959 is an ideal comparison test pump for calibrating pressure measuring instruments such as test gauges, indicators or transducers.
