Ralston DV0V-2FBA

Ralston Instruments DVOV-2FBA DV0V (25"Hg / 650 mm Hg Vac) pump, 1/4" female NPT gauge adapter, 3ft hose, 1/4" MNPT process conn. Pull a vacuum and calibrate vacuum gauges, transmitters or switches by attaching a gauge or pressure calibrator (gauge and calibrator not included) Hand Pump: DV0V Vacuum Pump Reference Connection: 1/4" female NPT x female Quick-test, no check-valve, brass Process Connection: 1/4" male NPT x male Quick-test, no check-valve, brass Hose: Quick-test 6900 psi hose, brass hose ends, 3 ft (92 cm) long