Wabco 4630371100 4/2 Directional Control Valve

Description

The Wabco 4/2 Directional Control Valve (MPN 4630371100) is a critical component within air brake systems, designed to control the flow of compressed air to actuators. This valve is commonly used in commercial vehicles and heavy machinery to manage braking functions and other pneumatic operations. With a 3.0 mm nominal diameter and M28 x 1.5 mounting, it features a turn actuation with a 30°/120° angle, offering precise and reliable directional control. Its robust design, operating up to 10.0 bar and within a temperature range of -40°C to +80°C, ensures consistent performance and longevity. The 40 x 62 x 105 mm valve also includes a locking function for added operational safety.

Key Features & Benefits

Basically, this valve manages the flow of compressed air in your air brake system. The “4/2” part tells you how it works. It has four ports – think of them as entry and exit points for the air – and two positions it can switch between. One position lets air flow to do something, like apply the brakes, and the other position blocks the airflow, releasing the brakes. It’s a simple on/off switch for the air, but a really important one. This valve is a key part of how your trailer brakes, or even truck brakes if it’s set up that way, actually work. It’s usually found controlling the air supply to the brake chambers. When you hit the brake pedal, it signals this valve to open, sending air to those chambers which then push the brake shoes or pads against the drums or rotors. It’s the link between your foot and actually stopping the vehicle. It's often used in applications like lift gates and air suspension too, anywhere you need to control air flow to a cylinder.

Symptoms, Risks & Replacements

Well, without this valve, your brakes just won’t work reliably. It’s what allows you to both apply and release the brakes. If it fails, you might find yourself stuck with brakes that are on all the time, or even worse, brakes that won’t engage when you need them. It acts like a shield protecting the rest of the system by controlling the air pressure. You’ll notice if it’s going bad because you might have trouble applying the brakes, or they could be sluggish to respond. We carry a good selection of these at Fixparts Online if you're looking to replace yours. It’s definitely a component you want to keep in good working order.

Warranty Information

Wabco 4/2 Directional Control Valve (MPN 4630371100) comes with a 1-year warranty.