Wabco 4735012020 Quick Exhaust Valve

Description

The Wabco 4735012020 Quick Exhaust Valve is a critical component in air brake systems, designed to rapidly release air pressure from the brake chambers. This valve is commonly used in commercial vehicles and trailers to improve braking responsiveness and reduce stopping distances. Its design ensures quick and efficient exhaust of air, contributing to faster brake application and release times. This valve measures 76 x 85 x 75 mm and features a nominal diameter of 14.0 mm, and M22 x 1.5 exhaust port thread. It's engineered to OE specification for reliable performance.

Key Features & Benefits

This valve basically lets air out of the brake system really fast when you release the brake pedal. It doesn’t apply the brakes, it just releases the pressure once you’re done braking. It’s a simple little component, but it does one job very quickly. Inside, it’s got a spring – loaded plunger and a port. When you hit the brakes, that port is closed. When you let off, the spring pushes the plunger away, opening the port and letting air escape. It’s part of your air brake system, naturally. Specifically, it’s often found near the brake chamber on each wheel. Air brakes work by building up pressure to apply the brakes, and then releasing that pressure. The quick exhaust valve is the key to how quickly that pressure gets released. It's there to make sure the brakes disengage promptly when you take your foot off the pedal. Without it, that air would have a much longer, slower path to escape.

Symptoms, Risks & Replacements

The main thing is responsiveness. You’ll notice if this thing starts to fail because your brakes won’t release as quickly as they should. It might feel like you’re still slightly dragging the brakes even after you've let off the pedal. That drag can overheat things, wear out brake components faster, and most importantly, affect stopping power. Think of it like a shield for the rest of your air brake system - it protects everything else by quickly releasing pressure. It keeps things working smoothly and safely. You can find these pretty easily, and Fixparts Online often has a good selection if you're looking to replace it. It's not a super expensive part, but definitely important for safety.

Warranty Information

Wabco Quick Exhaust Valve (MPN 4735012020) comes with a 1-year warranty.