Wabco 4728800720 Solenoid Valve

Description

The Wabco 4728800720 is a solenoid valve designed for use in air brake systems. Specifically, it functions as a critical component within the air valve network, controlling the flow of compressed air to actuate brakes in commercial vehicles and heavy machinery. This valve features a bayonet electrical connection (DIN 72585-A1-4.2-Sn/K2), operates at a maximum pressure of 20.0 bar, and is designed for mounting with 2 x Ø 9 mm bolts. It has multi nominal diameters of 9.8 / 7.0 / 0.6 mm and port threads of M16 x 1.5. With its robust construction and IP 6K9K protection class, this solenoid valve delivers reliable performance in demanding environments, ensuring consistent and precise brake actuation. The valve operates at 12 V with a rated current of 620 mA and can withstand temperatures ranging from -40°C to +80°C. Its dimensions are 170 x 200 x 60 mm.

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 4728800720) comes with a 1-year warranty.