Wabco 4630790020 Slide Valve 4/2

Description

The Wabco 4630790020 is a 4/2 Slide Valve used within air brake systems. This valve controls the flow of air within the braking circuit, typically found in commercial vehicles and trailers. It features M10 x 1 and Ø 7mm port threads and operates effectively between -20°C and +150°C with a maximum operating pressure of 10.0 bar. This valve adheres to OE specifications, ensuring reliable performance and compatibility. Its dimensions are 45 x 50 x 71 mm.

Key Features & Benefits

This valve basically controls the flow of air in your air brake system. Specifically, the “4/2” means it has four ports for air to enter and exit, and two positions – it either allows air to flow, or it blocks it. It directs air to activate things like your brakes, but also to release them. It’s a key component in how your trailer's brakes respond to the tractor’s signal. It takes a signal from the tractor – usually from the brake pedal – and proportionally applies the brakes on the trailer. Think of it as the middleman between what you want to do with the brakes and what’s actually happening at the trailer wheels. It gets a signal from the towing vehicle and tells the trailer’s air brake system to respond. It’s usually found in the air line running between the truck and the trailer. It’s a proportional valve, meaning it lets out air at a rate matching the signal it receives, so the trailer’s braking force matches yours.

Symptoms, Risks & Replacements

If this valve fails, you lose precise control over the trailer’s brakes. You might get full braking when you don’t want it, or not enough braking when you do. You’ll notice if it's failing because the trailer might feel like it’s pulling or not slowing down at the same rate as the truck. It’s a safety item, really. You want it working properly to keep everything under control. We carry a lot of different brands, and Fixparts Online is a good place to check for one that fits your setup. It's a relatively straightforward part to replace, but if you're not comfortable working on air brakes, it’s best to have a professional take a look.

Warranty Information

Wabco Slide Valve 4/2 (MPN 4630790020) comes with a 1-year warranty.