Every pressurized ammonia vessel is designed to hold a specific range of pressure and temperature. When something pushes past that range a fire, a control failure, a blocked outlet, a runaway refrigeration cycle the vessel needs a way to protect itself before it protects nothing at all. That’s the job of the pressure relief valve (PRV). Why PRVs Matter So Much in Ammonia Service Anhydrous ammonia is stored and processed under pressure in refrigeration systems, storage tanks, and process...

In industrial ammonia (R-717) refrigeration systems, choosing the right valve isn’t just a design preference; it’s a safety-critical decision. Ammonia is toxic, mildly flammable, and typically flows through the system at elevated pressures while constantly shifting between liquid and vapor phases. If the wrong valve ends up in the wrong location, the result can be excessive pressure drop, unstable control, trapped liquid expansion, or fugitive emissions. Understanding how globe valves, ball...

Last week, we shared a breakdown of the U.S. Chemical Safety Board’s (CSB) final report on the hazardous ammonia release at Cuisine...