The capacity on an OEM tag is the rated capacity of the valve on the media on which the valve is set. All valves intended for liquid service will be set on water and will have a nameplate capacity of GPM of water. All valves intended for gas/vapor service will be set on air and… Read More
When should a lifting lever be used on a relief valve?
A lifting lever should be used when the application is air, steam, or water operating over 140F. When selecting a lever for an application, don’t just look at the controlling scenario. Review all relieving scenarios to ensure the correct lever is selected. For instance, if the controlling scenario is air or steam, the first response… Read More
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