Wabco 9730111090 Relay Valve

Description

The Wabco 9730111090 is a Relay Valve used within Air Brake Systems to regulate air pressure and ensure efficient brake operation in commercial vehicles. This device controls the flow of air to the brake actuators, enabling responsive and reliable braking performance. Measuring 99 x 156 x 171 mm, this pressure reduction valve features M22 x 1.5 port threads for connections 1 and 2, and M16 x 1.5 for ports 41 and 42. It operates with a regulating ratio of 1:1.5 and a predominance of 0.50 bar, offering precise control and enhanced system stability. With a maximum operating pressure of 13.0 bar and a temperature range of -40°C to +80°C, this relay valve is a durable and dependable component for demanding applications.

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 9730111090) comes with a 1-year warranty.