Thermal Relief Valve

At Flowlink Valves & Controls, our Series 200 valves are expertly designed for steam boilers, including hypercritical units. All pressure-constraining and mechanically stressed components are generously sized to ensure long-term durability and safe operation. These valves are engineered to minimize the effects of temperature variations, maintaining reliable performance and providing a high degree of tightness. Ideal for demanding steam applications, the Series 200 valves deliver enhanced safety and efficiency, making them a trusted solution for critical operations in industries requiring dependable boiler pressure control.

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Technical Specifications

Sizes: Up to 6″ x 10”

Set pressure: up to 350 bar g

Max temperature: 649 °C

Overpressure: 3%

Blowdown: 4%

Designed in accordance with ASME sec. I

Inlet connections prepared for welding or flange ASME 600-2500

Codes and Standards

  • ASME Section I
  • ASME B16.5
  • ASME B31.1
  • API 520
  • API 521
  • API 527
  • ASTM
  • ISO 4126

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