Wabco 9730030130 Relay Valve

Description

The Wabco 9730030130 is a special type of relay valve used within air brake systems. These valves are critical components in commercial vehicles and heavy machinery, responsible for rapidly transmitting air pressure to the brake actuators. This particular relay valve features snap-on exhaust conforming to JED - 463, and is designed for mounting with 4x M8 bolts. It operates with an opening pressure of 0.3 bar, a maximum operating pressure of 15.0 bar, and a 1:1 regulating ratio. Its ports utilize an M22 x 1.5 thread. The valve is a pressure reduction version, built to OE specification, and functions effectively within a temperature range of -40°C to +80°C. Measuring 115 x 133 x 135 mm, this relay valve provides reliable and efficient brake system operation, enhancing vehicle safety and performance.

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 9730030130) comes with a 1-year warranty.