Wabco 9730090020 Trailer Control Valve

Description

The Wabco 9730090020 Trailer Control Valve is a critical component within air brake systems, designed to regulate air flow to trailer brakes for safe and efficient vehicle operation. It is commonly used in a variety of trailer applications ensuring reliable braking performance. This valve features a multi nominal diameter of 9 mm and multiple M16 x 1.5 port threads. Its robust construction and OE specification ensure durability and compatibility while operating within a temperature range of -40°C to +80°C. The valve's dimensions are 137 x 141 x 191 mm and features a snap-on exhaust contour and 4x M8 mounting options.

Key Features & Benefits

This valve basically manages the air pressure going to your trailer’s brakes. It has a few jobs, but the big ones are controlling the service brake – that’s when you press the brake pedal in your tow vehicle – and the emergency brake, which kicks in if there’s a loss of air pressure in the system. It also regulates the spring brakes, which are automatically applied if you lose air pressure. It's really the central point where your truck’s brake signal tells the trailer's brakes what to do. Think of it as the translator between your truck and the trailer. Your truck sends an air signal, and this valve takes that signal and tells the trailer’s air brakes how hard to apply. It’s part of the whole air brake system that allows you to safely and effectively slow down and stop when you’re towing. It sits between the air lines coming from your truck and going to the trailer. It’s not something you see working, but it’s crucial for everything working correctly.

Symptoms, Risks & Replacements

Well, it's important because it directly impacts your safety. If this valve fails, you could end up with brakes that don’t respond properly, or that lock up unexpectedly. You’ll notice if it’s going bad – things like longer stopping distances, the trailer pulling to one side when braking, or even the trailer brakes locking up. It acts like a shield, preventing runaway trailers or uncontrolled braking. It’s a vital component and needs to be in good working order. You can find a good replacement, and we can check stock, over at Fixparts Online, but honestly, any reliable auto parts store will have them. Just make sure it’s the right one for your setup.

Warranty Information

Wabco Trailer Control Valve (MPN 9730090020) comes with a 1-year warranty.