VAF Instruments positive displacement liquid flow meters stand for accurate volumetric measurement of a wide range of liquids, from low-density LPG to viscous chemical and petroleum products. VAF Instruments liquid flow meters are used in continuous metering applications, in-line blending processes, metered deliveries as well as for batching applications, such as the filling of containers and storage tanks. VAF's range of products covers flow rates from 1 litre/hour up to 960 m3/hour.

VAF Instruments LowFlow®/MidFlow® Model PT positive displacement sliding vane type liquid flowmeters are used in continuous metering applications. PT flowmeters have a simple, rugged design. With only few almost frictionless moving internal parts there is hardly any wear in the flowmeter which safeguards a typical long lasting lifetime.

VAF Instruments MidFlow®/HiFlow® positive displacement type liquid flowmeters are used in continuous metering applications, in-line blending processes and batch applications. MidFlow®/HiFlow® flowmeters have a simple, rugged design. With only few almost frictionless moving internal parts there is hardly any wear in the flowmeter which safeguards a typical long lasting lifetime.

A VAF AQ-Rate mass flowmeter is operating on the Coriolis principle. The process connection of the flowmeter is split internally into two identical v-shaped tubes, which are actuated at resonance frequency in opposite direction. When fluid flows through the tubes, the input legs of the v-shape will vibrate with the same frequency as the output legs, but they are behind in time.