Wabco 9347021100 Quadruple Protection Valve

Description

The Wabco 9347021100 Quadruple Protection Valve is a critical component within air brake systems, designed to safeguard against dangerous pressure buildup. Primarily used in the braking circuits of commercial vehicles, this valve enhances safety and system reliability. It features a dynamic operation and is built to OE specification. With dimensions of 83 x 113 x 143 mm, this valve provides precise pressure regulation and robust performance across a temperature range of -40°C to +90°C, ensuring consistent and dependable brake function.

Key Features & Benefits

This valve basically has four jobs. First, it regulates the air pressure going to your spring brakes – those emergency brakes that kick in if you lose air pressure. Second, it protects those spring brakes from being overcharged with air, which could cause them to drag. Third, it releases the spring brakes when you need to drive normally. And finally, it acts like a shield, preventing air from leaking from the spring brake chambers back into the main brake system. It's a lot packed into one valve, honestly. Think of it as the safety net for your entire air brake system. It sits between your air compressor and the spring brakes. Everything’s connected, so the valve ensures those emergency brakes work when you need them, but don’t interfere when you don’t. It's a crucial part of the safety system, especially for bigger vehicles like trucks and buses.

Symptoms, Risks & Replacements

If this valve fails, you could have a lot of problems. You’ll notice if your spring brakes are slow to release, or if they drag while you’re driving, causing overheating and wear. Worse, you might not be able to engage those emergency brakes when you actually need them—that’s a serious safety issue. It's the kind of part you really don’t want to mess around with. You can find these at places like Fixparts Online, and honestly, regular inspections are a good idea. It’s a relatively inexpensive part considering the trouble it can save you.

Warranty Information

Wabco Quadruple Protection Valve (MPN 9347021100) comes with a 1-year warranty.