Some companies imitate. We Innovate.
Imitation is easy. Innovation is hard work. That’s what sets The Lee Company apart.
The Lee Company STORY
Innovation is in our DNA. Leighton Lee II was an innovator who founded The Lee Company in 1948 with a vision to solve complex fluid control challenges. That spirit continues today under the leadership of Leighton’s granddaughter, Marietta Lee, the third generation of the Lee family to lead the company. In 2023, we proudly celebrated 75 years of engineering excellence. Every product we make—from miniature check and relief valves to shuttle valves, flow controls, precision orifices, and plugs—is designed to meet demanding customer needs with precision and reliability. With decades of experience, unmatched product breadth, and deep technical expertise, we deliver engineered performance—with zero risk.
from the beginning
The Lee Plug® Foundation for Success
The Lee Plug® is the original innovation that launched The Lee Company’s legacy of precision fluid control. Developed to meet the rigorous demands of aerospace and defense applications, it set the standard for leak-tight sealing in cross-drilled holes—without threads, O-rings, or sealants. Over the decades, that same engineering excellence has led to a family of expansion plugs, including the compact Short Betaplug®, designed for tight spaces and thin-walled components. While others have tried to replicate our designs, The Lee Company remains the trusted source for mission-critical sealing solutions.
featured Innovation
Maximize flow and minimize footprint with the 8mm poppet relief valve
This threadless, cartridge safety poppet pressure relief valve is designed to provide fast opening rates, stable flows, low hysteresis, quiet operation, and high cracking pressures. The 8 mm relief valve’s locking end uses the field-proven Lee Controlled Expansion Principle to provide secure retention and eliminate the need for threads, O-rings, or secondary retainers. This direct-acting relief valve features all stainless-steel construction, making it compatible with a wide range of fluids. The valve is 100% functionally tested to ensure performance.
Don’t let an imitator ruin your day – or your design. Put our knowledge to work for you.
Innovative Solutions
EV Case study
How the Lee Pressure Relief Valve helped a large Electric Vehicle automotive manufacturer improve electric drive module efficiency with our LC2 Series Pressure Relief Valves.
INNOVATION FROM A VIEW
DOWNLOAD THE 8TH EDITION INDUSTRIAL MICROHYDRAULICS HANDBOOK
The latest edition of our handbook features our complete precision industrial microhydraulic fluid control product line. You will find all of the fluid control products we have designed for industries ranging from automotive to high performance racing to off road vehicles. Download your copy today to see technical specifications, part numbers, installation information and useful engineer reference material.
Contact Us
CONTACT A LEE SALES ENGINEER
Explore proven fluid control solutions designed for your needs and applications. Contact our team of Technical Sales Engineers to get started.
