Variable Area Flowmeters Products


The VA 40 devices are flowmeters with tapered glass tubes designed for the measurement of liquids and gases. The devices are of uniform construction but available with various connections all conforming to standards.

The flowmeters are designed for installation in a vertical pipe run with flow from bottom to top. A customized scale is provided on the measuring glass. The glass cone allows direct indication of the flow value..

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The DK 46, DK 47, DK 48 and DK 800 variable area flowmeters feature glass cones of varying lengths for different accuracy requirements.

The medium is visible and the flow value of the gas or liquid can be read directly off the scale at the height of the float.

It is easy to change the measuring glass, which is protected by a plastic cover, without disassembling the fitting.

For precise setting of the flow value, all devices are equipped with a metering valve.



The new standard solution for the process industry. The H250/M40 flowmeters are setting a new standard in variable area flowmeter technology. They combine tried and tested flow measurement with latest communication capabilities like Foundation Fieldbus.

The functionality of the devices is modular extendable. The innovative construction allows a free choice of intrinsically safe or flameproof design.

The sturdy all-metal design, available in different materials, ensures high resistance to pressure, temperature and media and stands up to extreme application and environmental conditions. The new H250/M40 is the new standard solution for the process industry when costs and reliability are a factor.

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H250 Special

Variable area flowmeters-generally feature a vertically positioned measuring cone through which the medium flows from bottom to top, raising a float against the weight.

If the installation structure does not permit it otherwise, the versions H250H for horizontal or H250U for reverse installation position (from top to bottom) are used. The reset force lacking in the weight of the float is replaced by a tongue.

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DK32-DK34- DK37

The DK 32 and DK 34 variable area flowmeters are versatile and can be used for gases and liquids.

The sturdy all-metal design ensures high resistance to pressure, temperature and media and stands up to extreme application and environmental conditions.
The position of the float is magnetically transmitted to an analog indicator to display the measured value. No power supply is necessary.

The DK 37 variable area flowmeters can either be equipped with a mechanical or electronic indicator and are suitable for measuring gases and liquids.

They are sturdy, versatile all-metal measuring devices. All devices are fitted with a metering valve to accurately set the flow value.

PPS housing as standard, stainless steel housing as option.

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