Wabco 4728900700 Solenoid Valve

Description

The Wabco 4728900700 Solenoid Valve is a critical component within air brake systems, designed to control the flow of compressed air to actuate brakes in commercial vehicles and other heavy-duty applications. This device features TYCO HDSCS 4 x 2.8 CODING A electrical connections, operates at a maximum pressure of 22.0 bar, and is designed for mounting using 3 x Ø 8 mm bolts. It has multi nominal diameters of 11.3 / 8.0 mm and port threads of M16 x 1.5 ISO-4039-2, along with an integrated silencer on one port. With a protection class of IP 6K6K / IP 6K9K and operating within a temperature range of -40°C to +80°C, this solenoid valve delivers robust and reliable performance. Its OE specification ensures compatibility and ease of installation, while the 12V voltage and 625 mA rated current provide efficient operation. The dimensions of this unit are 70 x 169 x 160 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 4728900700) comes with a 1-year warranty.