The Kleinn Model 1150 is a premium 150 PSI inline adjustable air pressure regulator engineered to give you precise control over your high-pressure onboard air system. Featuring a heavy-duty construction built to withstand demanding automotive environments, this universal plumbing component is designed with a 1/4" Female NPT inlet and a 1/4" Female NPT outlet. Perfect for tuning the performance of your air horns or protecting specific pneumatic accessories, it includes an integrated 0–150 PSI pressure gauge, a chrome mounting collar, and necessary fittings. The user-friendly locking adjustment knob with a red indicator allows you to easily dial in your ideal output and lock it into place, ensuring simplified pressure management and maximum system reliability.