This article was originally published on January 10, 2022, and was updated on March 13, 2024. If you work in the oil and gas or chemical industry, or even in a power plant, you know that a manifold valve blocks the flow of fluid in your system so the process media will be isolated from pressure instrumentation. You also know that a block-and-bleed manifold blocks the upstream process media from the instrumentation while allowing the bleeding off (venting) of the remaining fluid from the system on the downstream side of the manifold. But when you need to know which manifold valve is the right one for your specific process, that's where we can help. Ashcroft is a leading authority in pressure instruments and the accessories that help them operate at peak performance. As the senior product manager for this segment of our line, I have had the opportunity to train many customers and distributors on this very subject. Read this article to learn the various manifold valves, how they are different and the mounting options you can choose from. When you are done, you will also find additional resources that may be of interest to you.

This article was originally published on April 18, 2022, and was updated on April 17, 2024. No matter what industry you work in, diaphragm seals (also referred to as isolators) and welded assemblies are used to protect your pressure and temperature instrumentation from corrosive process media. After decades of making quality pressure and temperature gauges and sensors to help keep processes performing reliably and efficiently, Ashcroft has seen just about every scenario where something can go wrong. One reason we like to share our expertise is to help people like you who may be experiencing a similar issue that we can help solve. In this article, you will learn what a welded diaphragm seal assembly is and how it is used to help mitigate the damaging effects of high temperature, pulsation and vibration endured by your instruments. You will also see how these assemblies can ensure reliable and accurate pressure readings of your process. When you are done, you will find links to additional resources that can help you learn more about related topics.

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).