Wabco 9347050110 Multiple-Circuit Protection Valve

Description

The Wabco 9347050110 is a Multiple-Circuit Protection Valve, a critical component within air brake systems. It's designed to safeguard against pressure loss in a trailer or lift axle, automatically applying the spring brakes if a critical pressure drop is detected. This valve is used in heavy-duty trucks and trailers to enhance safety and prevent runaways. The device features multiple circuits to protect against individual component failures and ensure continuous braking performance. Its dimensions are 115 x 140 x 210 mm. With a max operating pressure of 13.0 bar, it is engineered for reliability and durability, providing responsive and dependable operation under demanding conditions.

Key Features & Benefits

This valve basically manages the air pressure flowing through your brake system. It’s a bit like a traffic controller for air. It has multiple circuits – usually two or three – and it isolates those circuits from each other. What that means is, if you have a leak in one brake line or a component fails in one circuit, it won’t completely bleed pressure from all your brakes. It’ll keep the other circuits working normally, or at least with significantly reduced loss of braking power. It also prevents pressure from one circuit building up and potentially damaging another. Think of it as a key part of your air brake system's safety net, especially for trucks, buses, and larger vehicles. It's usually located somewhere along the main air lines, often near the air compressor or the brake chamber connections. It’s not something you’d directly interact with during normal driving, it's working behind the scenes to make sure everything’s stable and dependable. It's critical for maintaining control, especially during emergency braking situations or if a component somewhere fails.

Symptoms, Risks & Replacements

Honestly, it’s a really important safety component. If this valve fails, you could lose all or a significant portion of your braking power, which, as you can imagine, is a pretty serious issue. You'll notice if it’s going bad usually because your brakes will feel spongy, or your air compressor will be running much more frequently to try and keep up with a leak. It’s a preventative part, the kind of thing you want to address before it causes a bigger problem. We carry a good selection of these at Fixparts Online, and getting a new one installed by a qualified mechanic is definitely the smart move if you suspect this valve is failing. It’s a relatively inexpensive part considering the level of safety it provides.

Warranty Information

Wabco Multiple-Circuit Protection Valve (MPN 9347050110) comes with a 1-year warranty.