Thermal Relief Valve

Thermal relief type safety valves are designed to protect systems from overpressure caused by temperature-induced expansion of fluids. Here's an overview:

1. How They Work: When fluids are heated, they expand, potentially increasing pressure beyond the system's design limits. Thermal relief valves automatically release excess pressure to prevent damage or failure.
2. Applications:
   • Used in pipelines exposed to sunlight or heat tracing.
   • Protect closed vessels, water heaters, and cooling systems.
   • Common in pumps that recirculate water where heat buildup can occur.
3. Design Features:
   • Typically small in size, with inlet diameters often less than 1 inch.
   • Made from durable materials like stainless steel or carbon steel and etc.
   • Designed to contain discharged fluids safely, especially hazardous liquids.
4. Standards: Often compliant with codes like API 526 or EN 14597 for safety and reliability.