Safety Relief Valves
- Full nozzle, full lift design
- Special alloy steel spring and internals
- Ring Seals for bubble type shut-off on gas applications
- Available with flanged and butt-weld connections
- Self-compensation thermal design for reliable operation at varying temperatures
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Frequently Asked Questions.
A safety relief valve is a pressure-relief device designed to protect equipment and systems from overpressure conditions. It opens automatically when system pressure exceeds a preset limit and closes once the pressure is back to normal, ensuring safety and preventing damage.
Safety relief valves are typically used in applications requiring overpressure protection across various industries. Common uses include pressure vessels, boilers, and pipelines in power generation, oil and gas, and other industrial processing. They are also found in HVAC systems to protect refrigeration circuits, in water treatment plants for pump and pipeline safety, and in pharmaceutical and food industries to safeguard processing equipment. These valves are essential in any system handling high-pressure gases, steam, or liquids to prevent equipment damage and ensure safety.
Key considerations include set pressure, maximum allowable working pressure, type of fluid, operating temperature, discharge capacity, and material compatibility with the fluid.
Proper sizing ensures the valve can handle the required flow rate during overpressure events, preventing system failure or damage while maintaining efficient operation. An undersized valve may fail to relieve pressure effectively, while an oversized valve can lead to premature opening or instability.
To ensure safety valves are properly sized, determine the set pressure based on the system’s maximum allowable working pressure (MAWP) and calculate the required relief capacity considering the fluid type, flow rate, and operating conditions. Use industry standards like API 520 or ASME Section VIII for guidance and select a valve orifice size that matches the required capacity. Consider factors like backpressure and consult manufacturer data or tools to verify the valve’s suitability for the specific application. Proper sizing ensures safe and reliable overpressure protection.
