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In accordance with ASHRAE 15-2007, all pressure relieving devices must be properly sized. This tool has been developed to help end users decide which pressure relief valves are available.
The method for determing capacity has been specified by the National Board Pressure Relief Device Certification, NB-18 ?5.2 (July 5, 2005). This program assumes a standard density of air at 60?F and 14.67 psia.
The PRV Wizard is available for public use. The tool was developed by Mark Geurts as part of the Safety Relief Vent Tool. Please read the following information before proceeding.
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