Wabco 9710020300 Trailer Brake Valve

Description

The Wabco 9710020300 is a trailer brake valve, designed to regulate air pressure to the trailer brakes, ensuring safe and controlled braking performance. This relay valve is a critical component in air brake systems for trailers and is typically found in commercial vehicles, including trucks and trailers. Its design guarantees precise air delivery for optimal braking response, and it adheres to OE specifications for reliable operation. The valve measures 122 x 112 x 169 mm and features ports with various thread specifications including M22 x 1.5, M16 x 1.5, and a silencer port. It operates within a temperature range of -40°C to +65°C and has an adjustment range of 0.7 bar.

Key Features & Benefits

This thing basically controls the air pressure going to your trailer's brakes. It takes the signal from your truck’s brake pedal and translates that into air pressure that actually clamps down on the trailer’s brake shoes or pads. It has a couple of key jobs – one is to allow air into the trailer brake lines when you hit the brakes, and the other is to quickly release that air when you let off. It’s got internal components that react to different pressure levels, ensuring a smooth, controlled braking experience. It also usually has a quick – release feature to help prevent brake drag. Think of it as the middleman between your truck’s braking system and your trailer’s brakes. Your truck sends a signal, and this valve amplifies it and delivers it where it needs to go. Without it, your trailer’s brakes wouldn’t work properly – or at all – with your truck’s system. It's a key part of the air brake system specifically designed for trailers. It doesn’t control your truck’s brakes directly, just the ones on the trailer you’re hauling.

Symptoms, Risks & Replacements

Well, it’s safety, plain and simple. Your trailer is likely pretty heavy, and you need reliable braking force there to stop everything safely. This valve acts like a shield, protecting you from a runaway trailer situation. You’ll notice if this thing goes bad – usually you’ll get delayed braking, or the trailer brakes might drag, causing overheating and potentially even a fire. It's one of those parts you really don't want to ignore. You can find a replacement for a pretty good price on a site like Fixparts Online if you need one. Ignoring brake issues is just not worth the risk, so it’s good you’re asking about this.

Warranty Information

Wabco Trailer Brake Valve (MPN 9710020300) comes with a 1-year warranty.