GE Druck PV411A [PV411A-HA] 4-in-1 Multifunction Pressure and Vacuum Hand Pump with Accessory Kit. The GE Druck PV411A-HA Kit consists of the PV411A Multifunction Pump as well as a carrying case, hose, and NPT adaptors. The PV411A Multifunction Test Pump is the ideal tool for applying test and calibration pressures to sensors, gauges, switches, indicators and recorders. It is also a pressure source for workshops and laboratories. This wide capability removes the need to carry several handpumps. With just a few strokes, the PV411A generates up to 95% vacuum (-950 mbar at 1000 mbar ambient). For sensitive low pressure applications, the PV411A volume adjuster alone generates 300 mbar within 0.1 mbar. The stroke restrictor varies the pressure generated and prevents accidental overpressure. The PV411A generates gas pressure up to 60 bar, exceeding conventional hand pumps by more than 30 bar. This combined with an improved P/V selector value provides a more controllable release of pneumatic pressure. The PV411A additionally solves the problems of priming hydraulic systems as well as eliminating airlocks and fluid leakage. This is achieved with a unique vacuum priming facility. The volume adjuster is used to quickly and accurately generate pressure up to 700 bar.