Can a liquid trim valve be used in a steam or air/gas service?

The National Board maintains the NB-18 on their web site.  This document, among many other pieces of information, records active certificates for each valve series.  This document should be consulted first when determining if a valve can be used in a particular service.  Under the section of “Listing of Certified Types.” For instance, Farris’ 2600L… Read More