Wabco 9253920190 Double Diaphragm Tristop Valve

Description

The Wabco 9253920190 Double Diaphragm Tristop Valve is a critical component within air brake systems, specifically functioning as a brake actuator. This valve is designed to control the flow of compressed air to the brakes, enabling efficient and reliable stopping power in commercial vehicles. It features a robust double-diaphragm design and operates via a cam mechanism, ensuring consistent performance and longevity. The valve measures 210 x 230 x 585 mm and includes specifications such as M16 x 1.5 bolt threads, a 262 mm length, and a maximum operating pressure of 10.0 bar. Its OE specification ensures compatibility and maintains the vehicle’s original braking performance standards.

Key Features & Benefits

This valve basically controls the airflow to your brake chambers – those are the things that actually push to apply your brakes. It’s got two diaphragms inside, which is where the “double diaphragm” part comes from. Those diaphragms react to air pressure, opening and closing ports inside the valve. The “Tristop” part means it has three distinct positions – apply, hold, and release – giving you really precise control over the brakes. It’s a little complex inside, but essentially it directs air to build pressure for braking, hold that pressure even when you lift your foot slightly, and then release it all when you want to stop braking. Think of it as a key component of your air brake system, especially on trucks and trailers. It sits between your treadle valve (what your foot presses on) and the brake chambers. When you push the pedal, it sends a signal to this valve, which then sends the right amount of air to the brakes. It's a crucial link in making sure your brakes respond reliably.

Symptoms, Risks & Replacements

It's important because a failing Tristop valve can cause a whole range of braking issues. You might get slow or uneven braking, brakes dragging, or even a complete loss of braking power. A small leak or internal failure can really affect stopping distance. It acts like a shield, protecting the rest of the air brake system from issues. You’ll notice if it’s starting to fail – things like needing to press the pedal harder than usual, or the brakes not feeling “firm”. It's a safety item, plain and simple. We stock these at Fixparts Online, and it's a part you definitely want to keep in good working order.

Warranty Information

Wabco Double Diaphragm Tristop Valve (MPN 9253920190) comes with a 1-year warranty.