WIKA

Primary flow elements

Primary flow elements for special requirements

Orifice plates, meter runs, flow and Venturi nozzles, Venturi tubes, pitot tubes and restriction orifices are part of our portfolio of primary flow elements. 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, BS 1042, DIN 19206, UNI 10023). We offer calibration certificates in accordance with the ASME PTC6, ISPESL and IBR standards. With our extensive product range we are in a position to cover almost all industrial applications. Customised solutions can be developed to meet your specific needs.
FAQ
FAQ

What is the flow coefficient Cv?

The flow coefficient Cv determines the ratio between the actual flow rate and the theoretically possible flow rate. Different primary flow elements that have the same geometrical form, under the same flow conditions and with equivalent Reynolds numbe ...

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Can multi-bore restriction orifices overcome cavitation when high pressure drops are required?

Multi-bore restriction orifices do not solve cavitation problems. However, multi-step type restriction orifices can provide a remedy here.

What are the advantages of the FlowPak and ProPak systems over other primary flow elements?

The advantages of the FlowPak and ProPak systems are that no upstream or downstream pipes are required, whatever the flow profile. Fitting is flexible and suitable for applications with limited mounting space. The pressure loss is reduced to a minimu ...

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