VZO4 / VZO8
INDUSTRIAL METER
Application
VZO is a volumetric meter with an oscillating piston. The principle of volumetric metering ensures high precision with low flow rates and excellent endurance. VZO may be installed horizontally, vertically or at an angle. When used with burners, it may be fitted directly on the nozzle line.
Thanks to its materials - cast iron, brass and aluminium piston - VZO is particularly appropriate for metering non-aggressive liquid lubricants such as fuel oil or mineral oil.
VZO may be fitted with a pulse emitter. The variety of values and types of pulse make VZO compatible with all centralized technical management systems.
Features
- Volumetric meter
- Designed for oil and fuel
- Different pulse values
- Low starting flow rate
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Metrological data
Nominal diameter DN mm 4 8 Starting flow rate l/h 0.4 1.6 Minimum flow rate Qmin l/h 1 4 Maximum flow rate Qmax l/h 80 200 Permanent flow rate l/h 50 135 Error tolerance of volume between Qmin and Qmax < ±1 %* < ±1 %* Repeatability < ±0.2 % < ±0.2 % * Error tolerance 0.5 ... 1 l/h = ±5% / 1 ... 2l/h = ±2.5%
For burners and engines or motors, the meter must be selected on the basis of the nominal flow rate.
Meters destined to 2 speed burners are selected knowing Qmax can't be exceeded with the higher mode. -
Temperature and pressure
Max. temperature °C 50 or 80 Nominal pressure bar 25 -
Dimensions
Nominal diameter DN mm 4 8 Length mm 68 68 Depth mm 68 68 Height mm 78 78 Width of mesh from prefiltre/filtre mm 0.125 / 0.08 0.15 / 0.1 Threaded connections inches 1/8" 1/4" Weight without connection kg 0.65 0.75 -
Head loss
Nominal diameter DN mm 4 8 kvs (deltaP=Q²/Kvs²) à 5 mPa.s 0.22 0.5 -
Pulse emitter
Nominal diameter DN mm 4 8 Weight of impulse in litre 0.1 1 This technology doesn't require straight length.
