Wabco 4630131240 3/2 Way Valve

Description

The Wabco 4630131240 is a 3/2 Way Valve, a critical component in air brake systems. It's designed for use in controlling air flow within the brake lines, enabling the proper functioning of air brakes in commercial vehicles and other pneumatic systems. This valve features a push actuation and provides a nominal diameter of 4.0 mm with M12 x 1.5 exhaust and port threads. Its dimensions are 45 x 37 x 96 mm. The valve is designed to OE specification, delivering reliable performance and durability across a temperature range of -40°C to +80°C and a maximum operating pressure of 10.0 bar.

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 4630131240) comes with a 1-year warranty.