Our Customers

We are proud suppliers to these customers, who are innovators and leaders in the truck, trailer, transit, bus, RV, and specialty vehicle markets. Your standards for quality and performance are as high as Hadley standards, which is why we’re so committed to delivering solutions for Your Vehicle, Your Company, and Your Success.

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SmartValve™

Electronic height control systems have traditionally required several separate components: the valve manifold itself, an external sensor, and the associated electronics. That is, until Hadley’s SmartValve. Click to learn more.

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Air Horns

Hadley knows a few things about air horns, mainly because Harold Hadley invented one of the first freon-powered, dual-trumpet horns in 1945, and some of the first electric and air powered horns ever created. In fact, air horns are commonly referred to as “Hadley Horns”.

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Height Control Systems

The choice of vehicle manufacturers and fleets because of their proven performance. Whether it’s our series of classic valves, our Next Generation height control valves, or our Smart Air Management Systems (SAMS™), you will enjoy significant benefits.