Achieving the required levels of safety in oil and gas operations—whether downhole or subsea—can be particularly challenging. Sudden or unexpected pressure spikes pose a serious risk to equipment integrity, potentially leading to costly production stoppages or, in extreme cases, severe operational incidents. Reliable protection begins at the component level, where precision-engineered pressure relief valves play a vital role.
For more than 75 years, The Lee Company has delivered innovative fluid control solutions, helping customers overcome some of the industry’s toughest engineering challenges. The company offers a comprehensive range of robust and reliable relief valves, designed to safeguard systems under demanding conditions.
The Lee Company’s product line includes three primary types of relief valves.
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Safety relief valves are designed for intermittent “pop-off” applications.
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Pressure regulating valves maintain stable performance across a continuous operating range.
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Thermal relief valves protect against thermal expansion by relieving small amounts of fluid from trapped volumes as temperatures rise.
Each type is engineered to the highest precision standards and plays a critical role in downhole oil tool applications.
In specific scenarios—such as those involving extreme cracking pressures exceeding 10,000 psid—The Lee Company’s 0.281-inch high-pressure relief valves, rated up to 5,900 psid, can be used in series to achieve pressure relief as high as 11,800 psid. This innovative approach allows users to handle double the cracking pressure safely and efficiently. When the first valve begins to open, the pressure is typically insufficient to activate the second; however, once the combined threshold of both valves is reached, each valve opens in sequence, sharing the pressure drop—a simple yet highly effective solution.
Like all components produced by The Lee Company, these pressure relief valves are compact, lightweight, and exceptionally durable—engineered to last for the full lifespan of an oil tool. The product range includes sizes from 0.187-inch diameter valves up to 0.812-inch threaded line removable units (LRUs), ensuring optimal flow and precise opening pressures for diverse applications. For critical systems, zero-leak configurations are also available.
Additionally, The Lee Company offers custom-designed pressure relief valves, tailored to specific customer requirements, including unique cracking pressures, flow rates, leakage tolerances, and material selections.
For more information, visit: www.theleeco.com
