The difference between Pressure Relief Valve (PRV) and Thermal Relief Valve (TRV) | Piping Design

Overpressure in a piping system refers to a condition where the pressure inside the piping system exceeds the design limits or safe operating range. This can occur due to various reasons, including:
Equipment Failure - Malfunctioning pressure control valves, regulators, or other components can lead to a build-up of pressure in the system.
Thermal Expansion - When a fluid in the piping system is heated, it expands and can cause a significant increase in pressure if not properly managed.
Process Upsets - Sudden changes in process conditions, such as a rapid increase in flow rate or a valve closure, can lead to pressure surges in the piping system.
Fluid Hammer - Water hammer occurs when there is a sudden change in fluid velocity, causing pressure spikes in the piping system.
Blocked Discharge - If the discharge of a pump or other equipment is blocked, pressure can build up in the piping system.
Overpressure in a piping system can have serious consequences, including:
Equipment Damage - Excessive pressure can damage valves, fittings, and other components of the piping system, leading to costly repairs or replacements.
Safety Hazards - Overpressure can pose a safety risk to personnel working in the vicinity of the piping system, leading to injuries or fatalities.
Process Disruption - A sudden increase in pressure can disrupt the normal operation of the process, leading to downtime and production losses.
To prevent overpressure, piping systems are designed with pressure relief devices such as Pressure Relief Valves (PRVs) and Thermal Relief Valves (TRVs), which are designed to open and release excess pressure when the pressure in the system exceeds a certain limit. Regular maintenance and inspection of piping systems are also essential to ensure they operate within safe pressure limits.
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[@clgaming91]

Finally! A more clearer perspective on the differences between the two valves.

[@sskctx]

informative !!!!!!!!!!!!!!!!!!!!!!!!!