Wabco 4728800640 Solenoid Valve

Description

The Wabco 4728800640 Solenoid Valve is a critical component within air brake systems, specifically designed for controlling the flow of compressed air to actuate brakes in commercial vehicles. This device ensures reliable and responsive braking performance, contributing to vehicle safety and control. It features a bayonet electrical connection conforming to DIN 72585 standards, operates at a maximum pressure of 20.0 bar, and is suitable for mounting using 9mm fixings. The solenoid valve's multi-nominal diameter ranges from 9.8 to 0.6 mm, and it incorporates M22 x 1.5 JED - 388 port threads. This valve is built to OE specification and boasts an IP 6K9K protection class, ensuring durability in harsh environments. With dimensions of 114 x 164 x 205 mm and a voltage of 24V, this robust component delivers consistent performance across a temperature range of -40°C to +80°C.

Key Features & Benefits

These little guys are basically electrically controlled valves. Inside your ABS hydraulic unit, they open and close really quickly, controlling the flow of brake fluid to each wheel. They don’t make the pressure, they direct it. Think of them like tiny traffic signals for your brake fluid, telling it where to go. Each wheel usually has its own solenoid, so you’ve got a few of them working together. This valve is a key part of your Anti – lock Braking System, or ABS. When your ABS system detects a wheel starting to lock up during braking—like you’re hitting ice or slamming on the brakes hard—it uses these solenoids to rapidly pulse the brakes on that wheel. That pulsing is what stops the wheel from locking, allowing you to still steer while braking. It’s all happening super fast, controlled by your car’s computer. They work with the ABS pump and the speed sensors.

Symptoms, Risks & Replacements

If one of these valves fails, it throws off the whole ABS system’s ability to control braking to that wheel. You’ll likely get an ABS warning light on your dash, and the ABS might not activate when you need it. It won't necessarily mean your brakes won't work, but you lose that extra safety net of the ABS system. It acts like a shield against skidding. You’ll notice if one fails because the ABS warning light will come on and you might feel a pulsing in the brake pedal when you don't expect it, or the ABS won’t engage at all when you brake hard. If you need to replace one, places like Fixparts Online are good for getting the right part quickly.

Warranty Information

Wabco Solenoid Valve (MPN 4728800640) comes with a 1-year warranty.