For information regarding safety valve selection please view Safety Valve Selection literature, which will assist in making your valve choice based on your needs.
To find the correct valve sizing you will need to view the Safety Valve Sizing literature which will
contain information regarding the basics of safety relief valves, sizing guidlines, capacity of saturated steam, safety valve sizing by computation and more.
The Spence/Kunkle Crossover literature will present the differences between Spence and Kunkle brand valves. Spence displays it's superiorty over Kunkle in manufacturing and design.