New York-based Spence Engineering Company Inc. has published a new “Safety Relief Designer’s Guide,” a reference for selecting and sizing safety valves for steam, air, gas and liquid. The guide was created with engineers and plant maintenance personnel in mind, with sizing and design primers, including new sizing guidelines for safety relief valves in pressure reducing stations. The new guide also includes specifications for the complete line of Spence safety valves, as well as a handy competitive model crossover chart, selection chart andreprints from the ASME Code. A free copy may be obtained from sales@spenceengineering.com or tel. +1800 398 2493.