TOMOE VALVE INC

Pressure Relief Valves

Pressure Relief Valves

Pressure relief valves are critical safety devices designed to protect equipment and pipelines from over‑pressure conditions. Unlike isolation valves, these valves automatically release excess pressure when system limits are exceeded, preventing catastrophic failure, equipment damage, or safety hazards.Relief valves open proportionally to rising pressure, allowing controlled discharge until normal operating levels are restored. Safety valves, by contrast, open fully and immediately in emergency conditions. Together, they provide continuous protection, compliance with safety standards, and reliable operation across oil & gas, petrochemical, power generation, and chemical industries

Performance Benefits

  • Automatic Over‑Pressure Protection – Ensures system safety without operator intervention.

  • Precise Calibration – Accurate set points for repeatable performance.

  • Emergency Response – Safety valves open instantly to prevent disaster.

  • Regulatory Compliance – Meets ASME, API, and ISO standards.

  • Durability – Built for high pressure and temperature environments.

  • Low Maintenance – Simple inspection and servicing requirements.

Material Options

MaterialApplication / Benefit
Carbon & Cast SteelGeneral service, steam, and high‑temperature duty
Stainless SteelCorrosive media, cryogenic service, hygiene environments
Special AlloysMonel, Hastelloy, Inconel for aggressive chemicals and extreme thermal cycling

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Technical Data – Pressure Relief Valves

SpecificationDetails
Size Range½” to 12” (DN15 – DN300)
Pressure RatingsANSI 150# to 2500#, API up to 10,000
Design StandardsAPI 526, ASME Section VIII, ISO 4126
TypesSpring‑Loaded, Pilot‑Operated
End ConnectionsFlanged, Butt‑Weld, Socket‑Weld, Threaded
TestingAPI 527, ASME Section VIII, ISO 4126 compliance
OperationAutomatic pressure‑activated release
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