Wabco 4630372000 Directional Control Valve 4/3 Ng90

Description

The Wabco 4630372000 is a 4/3 Directional Control Valve designed for use in air brake systems. This valve directs airflow to control pneumatic actuators, commonly found in commercial vehicles and heavy machinery. With a locking function, this robust valve ensures reliable and precise control of braking and other pneumatic functions. It features M28 x 1.5 mounting, M16 x 1.5 port threads, and an exhaust port of M10 x 1. The valve's dimensions are 40 x 62 x 110 mm and operates effectively within a temperature range of -25°C to 80°C, meeting OE specifications for optimal performance.

Key Features & Benefits

This valve basically manages the flow of compressed air in your air brake system. The “4/3” tells you how it manages that flow. Think of it like a railroad switch. It has four ports—ways for air to enter or exit—and three positions. In each position, it directs air to different lines. So it can send air to apply the brakes, release them, or hold them in a certain state. The "Ng90" part just specifies how it operates internally, it’s about how quickly and reliably it switches between those positions. This valve is a critical piece of your air brake system. It's most often used to control air cylinders or actuators—things that physically do the braking. You’ll find them controlling things like trailer brakes, lift axles, or even certain types of parking brakes. It takes the signal from your brake pedal or control lever and turns that into the air pressure needed to make something happen.

Symptoms, Risks & Replacements

Without a functioning directional control valve, you won’t have reliable braking control. It’s a safety item, plain and simple. If it fails, you could lose your ability to apply or release your brakes properly, or the brakes might apply unexpectedly. You’ll notice if this valve is going bad because you’ll experience slow or inconsistent brake response. Sometimes you'll get brakes sticking on, or not releasing. We carry a good selection of these at Fixparts Online, and getting a new one is a lot cheaper – and safer – than dealing with brake failures. It’s a relatively straightforward part to replace, but always double – check the specs to make sure you're getting the right one for your setup.

Warranty Information

Wabco Directional Control Valve 4/3 Ng90 (MPN 4630372000) comes with a 1-year warranty.