Venturi Elements for Accurate Measurement of Fluid Flow with Low Pressure Loss

Permutit Power Products Venturi Elements offer unsurpassed accuracy combined with the lowest pressure drop of all differential pressure-producing devices. Used for measuring fluid flows under pressure in closed piping systems, our Permutube Series Venturi Elements offer an inherent accuracy of 0.5% when uncalibrated and 0.25% when calibrated.

Permutit Power Products have been the trusted source for all grades of nuclear and commercial flow straighteners and other components for many years. Our capabilities include dissimilar metal welding and fabrication to ANSI and RDT specifications. We meet the requirements of the ASME Codes and 10CFR50, Appendix B, through our stringent quality assurance program.

Applications

Permutube® Series Venturi Elements precisely measure gas, steam or liquid flows in virtually all closed pressure piping systems. Utilized in both fossil fuel and nuclear powered steam/electric generating plants, they are ideal for high-pressure and supercritical boiler systems, including feedwater and recirculation loops.

Permutit Permutube Series Venturi Elements are offered in a wide range of beta ratios to meet your specific performance requirements. They can be manufactured in a wide variety of materials and supplied with an averaging annulus for use in all types of fluid measurement systems. Pressure connections can be either single high-low or multiple high-low sets. Elements can be either factory installed in a pipe length or supplied separately for on-site installation by others.

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Features and Benefits

Low Permanent Pressure Loss – approximately 10% at Beta ratio 0.5 and above
Low Pumping costs – resulting from low pressure loss
Highly Flexible – meets a wide variety of size, flow and application requirements
Rugged Design – limited only by the pressure limitations of the pipe in which they are installed
Highest Quality – can be designed and manufactured to ASME Codes, ASME PTC-6 requirements and 10CFR50, Appendix B and ANSI B31.1

Construction

Permutit Venturi Elements are machined from either forgings or centrifugal castings and surface finishes are available up to 4 RMS. Depending upon your application, materials of construction can include:

Carbon steel
Series 300 stainless steel
Monel
Copper-Nickel
Titanium

As the leader in the water treatment industry, we have the greatest depth of personnel and technological resources to overcome any challenge. We offer the widest variety of specialty products for the power generating industry, including many custom components. Please contact us for additional information about your specific requirements.

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