Wabco 9735000420 Quick Release Valve

Description

The Wabco 9735000420 is a Quick Release Valve crucial for the safe and efficient operation of air brake systems. This valve is designed for use in commercial vehicles and trailers, functioning to rapidly exhaust air from the brake lines when the service brake is applied or the engine is shut off. This quick response minimizes drag and prevents brakes from remaining engaged unnecessarily. The valve measures 76 x 78 x 104 mm and features M22 x 1.5 exhaust and port threads. Its mounting utilizes 2x Ø 9.5 mm bolts, with a bolt spacing of 38 mm. The valve is designed to OE specification and operates with a maximum pressure of 12.5 bar.

Key Features & Benefits

Basically, this valve rapidly dumps air pressure from the brake chambers when you hit the brakes, and then again when you release them. It’s a fast acting switch, you could think of it like that. It allows air to escape quickly, letting the brakes disengage faster than they would on their own. It also helps prevent the brakes from staying partially applied, which is important. It’s a small part, but does a lot. This valve sits within your air brake system, usually close to the air compressor and service reservoir. It's tied into the brake lines and controls how quickly air pressure builds and releases to the brake chambers at each wheel. It's a key component in the overall system, helping to ensure efficient and responsive braking.

Symptoms, Risks & Replacements

If this valve fails, you’ll notice if it’s dragging—meaning your brakes might stay slightly on, causing overheating and wear on your brake components. Or, it could cause slow brake response—you press the pedal, and things don’t happen as quickly as they should. It really contributes to safety and keeping your stopping power reliable. A failing valve can be a serious issue, so it’s good you’re checking it out. You can find replacements at places like Fixparts Online if you need one, and it’s a fairly straightforward swap for a mechanic.

Warranty Information

Wabco Quick Release Valve (MPN 9735000420) comes with a 1-year warranty.