When system pressure rises above the valve’s predetermined setpoint, the valve opens to allow the controlled discharge of oil. This prevents ruptures in tanks, protects pumps from damage, and maintains the integrity of heat exchangers where oil is processed.
Pressure Relief Valve Oil Industry Standards and Compliance
In contrast, pilot-operated valves are suitable for larger oil storage tanks and high-capacity systems, as they utilize the system pressure to assist the main valve, allowing for precise control even with minimal pressure differentials. This flow reduces the pressure within the vessel or pipeline, and once the pressure returns to a safe level, the valve closes.
In the context of oil, which can be both flammable and viscous, the design of these valves must account for the specific characteristics of the fluid to ensure reliable operation. Valves intended for use in oil systems must undergo strict hydrostatic and pneumatic tests to verify their burst pressure, leak tightness, and reseating capabilities.
Pressure Relief Valve Oil Industry Standards and Compliance Requirements
Set pressure must be higher than normal operating pressure but lower than the maximum allowable working pressure. The two primary categories are spring-loaded direct-acting valves and pilot-operated valves.
More About Pressure relief valve for oil
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