WIKA

Primary flow elements

Primary flow elements for special requirements

Our portfolio of primary flow elements consists of orifice plates, meter runs, flow nozzles, venturi tubes, pitot tubes, wedge meters, and proprietary designs. All our primary flow elements are designed in accordance with the principles and requirements of international standards (ISO 5167/ISO TR 15377, ASME MFC, ASME PTC6, and ASME PTC 19.5). We offer calibration certificates in accordance with the ASME PTC6, ASME MFC 3Ma, and ASME PTC 19.5 as well as others by request. With our extensive product range, we are able to cover almost all industrial applications. Customized solutions can be developed to meet your specific needs.
FAQ
FAQ

What are the advantages of pitot tubes?

Pitot tubes are simple to use and install. They operate trouble-free with a constant performance and have practically no pressure drop. With pitot tubes, a cost effective measurement and energy saving is possible. They can be used either as a permane ...

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Which are the recommended upstream/downstream straight lengths for orifice plates and Venturi tubes?

The upstream and downstream straight lengths depend on many factors, such as the piping system and the beta ratio, for which reason no blanket statement can be made on this. If you have any questions on your specific application, you are welcome to c ...

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What is the sonic condition?

The sonic condition is when a gas flows through an orifice and its pressure drops, a critical pressure value exists for which flow rate reaches the speed of sound in that gas. This happens when Pout/ Pin ratio is approx. 0.5. At sonic condition, flow ...

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