Wabco 9710020330 Emergency Release Valve Relay

Description

The Wabco 9710020330 Relay Emergency Valve with Release Valve is a critical component within pneumatic braking systems, primarily used in commercial vehicles to ensure reliable emergency braking functionality. It serves as a combined unit of the 9710020300 relay valve and release valve 9630010130, complete with necessary fittings. This valve rapidly applies the spring brakes upon a significant pressure drop in the main air line, offering a crucial safety feature. It features dimensions of 183 x 139 x 169 mm, operates effectively within a temperature range of -40°C to +65°C, and boasts a maximum operating pressure of 10.0 bar. Its precise design and OE specification ensure consistent performance and compatibility, enhancing the overall safety and efficiency of the braking system.

Key Features & Benefits

This relay basically controls the air that releases the spring brakes when you hit the emergency brake button – or if there’s a serious drop in air pressure in the system. It’s an electrically controlled valve; when it gets the signal, it opens up and lets air flow to release those brakes. Think of it as a gatekeeper for that air. It also holds the air pressure in to keep the spring brakes applied normally. It's a crucial part of your air brake system's safety features. Your spring brakes are designed to always apply if you lose air pressure – that’s a fail – safe. This relay is what allows you to manually override that and release those spring brakes when you want to, and also deals with a total air loss. It’s really the control center for that emergency release function. It’s connected to your brake pedal, the emergency brake button, and your air reservoir, so it’s always ready to act.

Symptoms, Risks & Replacements

Without a functioning relay, you won't be able to manually release the spring brakes if needed, and more seriously, the system may not properly release them in an emergency air loss situation. That could mean being stuck, or worse, not being able to control the vehicle. You’ll notice if this part is going bad because the brakes might drag, or the emergency release button won’t work smoothly. It can also cause issues with maintaining proper air pressure. You can find these relays pretty easily, Fixparts Online has a good selection if you’re looking. It’s a relatively inexpensive part considering the trouble it can save you, and definitely something you want to keep in good working order.

Warranty Information

Wabco Emergency Release Valve Relay (MPN 9710020330) comes with a 1-year warranty.