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

How does cavitation occur?

Cavitation occurs with high flow velocities or when an object moves through a flow with high velocity. It can also occur if the local pressure declines to some point below the vapour pressure of the liquid and subsequently rises above it.

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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What is the difference between differential pressure Δp and permanent pressure loss?

The differential pressure Δp is the differential pressure measured across the restriction, which is converted to a flow rate by a differential pressure transmitter (pressure drop inside the meter section). The difference between the upstream pressure ...

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