This article was originally published on January 31, 2022 by John Varkonda and was updated on May 8, 2024, by Todd Thomas. Keeping pressure measurement instruments from becoming damaged in harsh environments is a challenge in many industries, including water/wastewater. Diaphragm seals play a vital role in these applications by creating a leak-tight and corrosion-resistant barrier between a pressure instrument and your process. For many, a flanged diaphragm seal connection is a great choice because it provides a convenient way to attach instrumentation directly onto flanged process piping without having to use threaded connections. But proper installation of these seals is the key to getting the most protection. Ashcroft is a recognized global leader in pressure and temperature instrumentation and uses our decades of experience to educate and guide customers to the solutions that best meet the challenge at hand. In this article, you will learn a bit about flanged diaphragm seals, the basic principles of torque and best practices for installing a flanged diaphragm seal in your process. When you are done reading, we will also share additional resources that may be beneficial to you.

Pressure transducers can be used in many challenging environments where they may be exposed to extreme temperatures but are expected to operate reliably and predictably. These challenging temperature exposures can come from a few sources such as the surrounding environment (ambient temperature), radiation (sunlight), or the temperature of the process media being measured (media temperature).

Options for pressure instrument mounting assemblies can seem overwhelming. There are endless combinations and products, each with its own configurations depending on how you’re using them. So, how can you get the proper assemblies to suit your project’s needs? How do you start looking in the first place? There are a few factors to consider when researching pressure instrument mounting assemblies. All of them can help protect your equipment and ensure successful processes. This article will focus on five of the top considerations when choosing the right assemblies.