Wabco 4728801000 Solenoid Valve

Description

The Wabco 4728801000 Solenoid Valve is a critical component within air brake systems, functioning as a fast-acting switch to control the flow of compressed air. This valve is commonly used in heavy-duty vehicles and trailers to actuate brakes, shifting gears, and other pneumatic functions. The valve features a bayonet electrical connection (DIN 72585-A2-4.1-Sn/K2, DIN 72585-A1-4.2-Sn/K2) and operates efficiently within a temperature range of -40°C to +80°C, with a maximum operating pressure of 20.0 bar. Its dimensions are 137 x 172 x 207 mm, and it’s designed to OE specification, offering reliable performance and durability within demanding applications. The valve’s robust protection class of IP 6K9K ensures resistance to dust and water ingress, and its multi nominal diameter ranges from 9.8 to 7.0 mm, while utilizing M22 x 1.5 JED - 388 port threads.

Key Features & Benefits

This valve basically controls the flow of compressed air in your air brake system. It's an electrically operated switch, think of it like a little gatekeeper. When it gets a signal, it opens or closes, letting air through or stopping it. It can do a few different things depending on the specific valve – it might release the brakes, apply them, or control things like the parking brake. Some valves manage the air supply to the suspension, too. In your braking system, it’s a critical part of how you actually stop. The driver’s pedal sends a signal, and that signal then activates the solenoid valve. That valve then directs the compressed air to the brake chambers, which push out the brake shoes or pads. It's a key link between what you do with your foot and the brakes engaging. It’s also used in things like air horns, or automatic leveling systems on some trucks or RVs.

Symptoms, Risks & Replacements

Well, without it, your brakes won’t work properly, or at all. It’s a safety item, plain and simple. You’ll notice if a solenoid valve is failing because your brakes might drag, feel spongy, or just not hold properly. Ignoring a bad solenoid valve is a really bad idea. They're pretty reliable, but over time, especially with dirt and moisture in the air lines, they can get stuck or fail. We carry a good selection here, and you can find a lot of options at Fixparts Online too, if you like browsing that way. Just make sure you get the right one for your vehicle – there are different types and sizes.

Warranty Information

Wabco Solenoid Valve (MPN 4728801000) comes with a 1-year warranty.