Wabco 9347050210 Quadruple Circuit Protection Valve

Description

The Wabco 9347050210 Quadruple Circuit Protection Valve is a critical component within air brake systems, designed to safeguard the braking functionality of commercial vehicles. This valve is used to protect individual circuits within the air brake system from failure, ensuring continued operation even with a leak or malfunction in one part of the system. It features multiple circuits, providing redundancy and enhanced safety. The valve operates with a charging pressure of 3.75 bar and varying opening and closing pressures for each of its four circuits – 7.5 bar opening and 6.5 bar closing for circuits 21 and 22, 5.35 + 7.5 bar opening and 3.8 bar closing for circuit 23, and 7.5 bar opening and 5.9 bar closing for circuit 24. It features M22 x 1.5 port threads for connections 1 and 26, and M16 x 1.5 threads for the remaining ports. This valve is engineered to OE specification, delivering reliable performance and contributing to the overall safety and efficiency of the braking system.

Key Features & Benefits

This valve essentially splits your braking system into four separate circuits – one for each wheel, generally. It takes the air pressure from your compressor and distributes it to the brake chambers at each wheel. But, and this is the key part, it also protects each circuit. If you spring a leak in one brake line – say, at a wheel cylinder or a brake hose – this valve is designed to isolate that leak. It prevents all the air from escaping from your entire system, which could leave you with little to no braking power. It's like having four independent mini – systems instead of one big one. Think of it as a central control point for your air brakes. It sits in the air line, usually between the compressor and the first set of axles. All the air heading to your brakes has to go through this valve. It doesn’t apply the brakes, it just manages the air supply to the parts that do. You’ll find it on most heavier vehicles – anything needing a robust air brake system for safety.

Symptoms, Risks & Replacements

This is a major safety component. If this valve fails, you lose that circuit protection I was talking about. You'll notice if it’s going bad – usually by a noticeable drop in air pressure when you apply the brakes, or a slow leak somewhere in the system. It could even lead to the brakes locking up on one axle. It’s not something you want to gamble with. A failing valve means a potentially dangerous situation. We carry these at Fixparts Online, and getting a new one is a lot cheaper than dealing with the consequences of brake failure.

Warranty Information

Wabco Quadruple Circuit Protection Valve (MPN 9347050210) comes with a 1-year warranty.