Wabco 9730090140 Trailer Control Valve

Description

The Wabco 9730090140 Trailer Control Valve is a critical component within air brake systems, responsible for regulating air flow to the trailer brakes. It's commonly used in commercial vehicles and trailers to ensure safe and efficient braking performance. This device features a multi nominal diameter of 9mm and M16 x 1.5 port threads across multiple ports, with a max operating pressure of 8.5 bar and mounting via 4x M8 bolts. Its dimensions are 190 x 139 x 146 mm. This valve is designed to meet OE specifications, offering a reliable and durable solution for maintaining optimal braking system functionality and contributing to enhanced vehicle safety.

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 9730090140) comes with a 1-year warranty.