Wabco 4630131120 3/2 Way Valve

Description

The Wabco 4630131120 is a 3/2 way valve used within air brake systems to control the flow of air. This valve features a push actuation and is designed for applications requiring precise air control within commercial vehicles and other pneumatic systems. With a nominal diameter of 4.0 mm and connections of M12 x 1.5, it provides reliable performance and durability. The valve measures 35 x 45 x 94 mm and operates effectively within a temperature range of -40°C to +80°C, ensuring consistent functionality in diverse environmental conditions. Its OE specification guarantees compatibility and performance aligned with original equipment standards.

Key Features & Benefits

This valve basically controls airflow in your air brake system. The ‘3/2’ part tells you what it does – three ports for air to move through, and two positions it can switch between. One position lets air flow to an actuator – like what moves your trailer brakes – and the other position cuts off that flow. It’s a simple on/off switch for the air, controlled by pressure itself, so when enough pressure builds, it flips. It's a core piece of your air brake system, often used in things like trailer supply lines or spring brakes. Think of it as a gatekeeper for the air that ultimately stops your vehicle. It's frequently used to apply or release brakes automatically based on pressure changes, so it doesn’t require constant manual input. A common setup would be in a trailer emergency brake system – if your tow vehicle disconnects, the valve triggers and applies the trailer brakes.

Symptoms, Risks & Replacements

Without this valve working right, your brakes won’t function reliably. If it sticks closed, you could lose braking power. If it sticks open, things can be over – pressurized and cause problems. It’s a pretty critical safety component. You’ll notice if this thing goes bad – usually a total brake failure, or brakes that won’t release properly, or even just erratic braking. It acts like a shield, protecting the rest of the system from damage and making sure the brakes do what they need to do when you need them to. You can find replacements pretty easily – we carry a good selection at Fixparts Online, and plenty of other suppliers do too. Just make sure you get the right one for your setup, as they can vary a bit.

Warranty Information

Wabco 3/2 Way Valve (MPN 4630131120) comes with a 1-year warranty.