Wabco 9730030080 Relay Valve

Description

The Wabco 9730030080 is a Relay Valve crucial for air brake systems, typically used in commercial vehicles to control air distribution and ensure reliable braking performance. This pressure reduction valve regulates air pressure to the trailer brakes, contributing to a safer and more efficient braking system. It features M22 x 1.5 JED-464 port threads, snap-on exhaust connection (JED-463), and mounts using 4x M8 bolts. With a calculated volume of 2.2971 and operating within a temperature range of -40°C to +80°C, this valve offers precise control and durability. Its dimensions are 154 x 113 x 132 mm.

Key Features & Benefits

Basically, a relay valve takes the signal from your brake pedal – that initial push – and boosts it, sending a stronger, faster signal down the air brake lines to the brake chambers at each wheel. It’s like an amplifier for your braking. It manages the air pressure, allowing a quick build – up when you apply the brakes, and then releases it when you let off. It also has a “quick release” feature – it vents the air from the brake lines faster than the foot valve alone can, which helps with quicker braking and prevents the brakes from staying partially applied. It sits in the air brake system, usually somewhere between your foot valve and the air brake chambers. It's a key component in how your air brakes work, taking that initial signal and distributing the air pressure to actually do the stopping. Think of it as a middleman, stepping up the power. It's most commonly found on trucks and trailers, of course, anything using air brakes.

Symptoms, Risks & Replacements

Well, if this valve fails, you’ll notice if you're trying to stop. You might get a delayed response when you hit the brakes, or they might not apply fully. It can also cause the brakes to drag a little, which wastes fuel and wears down your brake components faster. A failing relay valve is a safety issue, plain and simple. You want to address it as soon as you suspect a problem. We carry a good selection of them, and you can also find options at places like Fixparts Online, just to compare. Getting the right one is important, so make sure you have your vehicle’s information handy when you order.

Warranty Information

Wabco Relay Valve (MPN 9730030080) comes with a 1-year warranty.