Wabco 9617020047 Hand Brake Valve

Description

The Wabco 9617020047 Hand Brake Valve is a critical component within the air brake system of commercial vehicles, primarily used to mechanically apply the spring brakes. It ensures safe and reliable parking and emergency braking functionality. This device features a 90° actuation angle, a calculated volume of 5.673, and is designed to operate with a maximum pressure of 8.0 bar. Its mounting utilizes 2x Ø 7 mm holes, and it includes M14 x 1.5 port threads for both connections. The dimensions of this hand brake valve are 114 x 167 x 298 mm. Manufactured to OE specification, this valve provides precise control and durability, contributing to enhanced braking performance and vehicle safety.

Key Features & Benefits

This valve basically controls the air pressure to the spring brakes. Think of your spring brakes as being always partially applied – they’re mechanically engaged. The air pressure going to this valve holds those spring brakes released when you’re driving normally. When you pull the hand brake, you're actually venting that air pressure, letting the springs do their job and slowing or stopping the vehicle. It’s a manual override for your primary brakes, and also keeps the vehicle secure when parked. It has a couple of different jobs depending on the setup – some systems also use it as a safety feature if you lose air pressure in the main system. It's a critical part of the air brake system, sitting between the air tanks and the spring brakes. It’s what allows you to manually apply those powerful spring brakes, either for parking or in an emergency situation if your foot brake fails. It’s usually located where you can easily reach it, like near the driver’s seat, and has a cable running to the spring brakes.

Symptoms, Risks & Replacements

Well, if this valve fails, you could have trouble holding the vehicle when parked – meaning it could roll away. You’ll notice if it's not working right because the hand brake might not fully engage, or it might take a lot more effort than usual. Even worse, if it sticks open, the spring brakes could drag, causing overheating and wear. It really acts like a shield, ensuring your vehicle stays put when you need it to. You can find these pretty easily, we carry a good selection, and folks also like Fixparts Online for quick shipping and competitive prices. It’s definitely one of those parts you don’t want to mess around with.

Warranty Information

Wabco Hand Brake Valve (MPN 9617020047) comes with a 1-year warranty.