Vacuum
Applying vacuum to absolute, negative gague and differential field
instruments is no longer a problem. With just a few strokes, the PV 411A
generates up to 95% vacuum (-950 mbar at 1000 mbar ambient).
Low Pressure (pneumatic)
For sensitive low pressure applications, the PV 411A volume adjuster also
generates 300 mbar to within 0.1 mbar. The stroke restrictor varies the
pressure generated and prevents accidental overpressure.
Medium Pressure (pneumatic)
The PV 411A 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.
This extended capability enables many new applications to be addressed.
High Pressure (hydraulic)
The PV 411A solves the problems of priming hydraulic systems; 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.
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