Permutit Power Products have been the trusted source for all grades of nuclear 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

Permutit Orifice Plates measure liquids, gas or steam in virtually all closed pressure piping systems. Utilized in both fossil fueled and nuclear powered steam/electric generating plants, they are particularly applicable for a wide range of boiler applications from low pressure to supercritical.

Features and Benefits

Design Features

• Permutit Orifice Plates are offered in concentric, eccentric or multi-hole designs and either paddle or ring type configurations
• Available in a full range of sizes, they can be installed in pipes from ½” to 36” nominal diameters
• They are designed to ASME and ISA Standards and can be applied with ANSI 300# orifice flanges or within a meter run
• All variations of length, pressure rating, couplings and materials are available

Construction

Permutit Orifice Plates are machined from plate. Surface finishes range from 125 RMS to #4 commercial grade. Depending upon your application, materials of construction can include:

• Carbon steel
• Series 300 stainless steel
• Monel
• Copper-Nickel

Other Features and Benefits:

• Accuracy of ± 1.0% over Beta rations of 0.2 – 0.7
• Lower cost than flow nozzles
• Versatile design for a wide variety of applications, size and flow requirements
• Highly flexible and can be provided in piping sections built in accordance with 10CFR50, Appendix B3.1 (complies with all Q.A. documentation)

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.