The Tour and Andersson calibrated balancing valve is available in 14- and 16-inch (350 and 400 mm) sizes for use in large-diameter applications with high flow requirements. The valves offer precise ...

Many of you have responded to recent water balance articles with this question: “What do we do when a water system lacks balancing valves and test ports?" Let’s take a look at how you can test, ...

THE thermionic valve has long been recognized as a useful tool in many branches of science and engineering; but few, with the exception of experimenters, have realized that it can be usefully applied ...