Table of Contents
What are Relief Valves?
A relief valve is a type of safety valve designed to open at a preset pressure, and discharge fluid until pressure drops to acceptable levels [1]. The valve's release of elevated liquid, gas, or steam pressures acts to prevent damage to the system.
Pressure Release Valve Diagram [2] |
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Operation
Relief valves are comprised of three main elements:
- Valve element - typically a spring loaded poppet valve. [1]
- Sensing element, typically a diaphragm or piston.[1]
- Reference force element. Most commonly a spring. [1]
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