Pressure relief valves (PRVs) for refineries are part of the wider PRV market, which is estimated at about USD 4.7 billion in 2024 and projected to reach roughly USD 7.4 billion by 2034, growing at a CAGR of around 4.6%. Refinery applications represent a sizable share due to extensive use on process vessels, heat exchangers, storage tanks, and pipelines across crude distillation, conversion units, and downstream treating units. In major refining regions—North America, the Middle East, and Asia—PRV demand closely tracks turnaround cycles, new capacity additions, and regulatory safety requirements.