Wabco 9710025807 Emergency Shutoff Valve

Description

The Wabco 9710025807 Relay Emergency Valve, also known as an Emergency Shutoff Valve, is a critical component in air brake systems. It's designed for use in heavy-duty vehicles and trailers, functioning as a fail-safe mechanism to rapidly apply the spring brakes in the event of a critical air pressure loss or system failure. This relay valve combines the functionality of a standard emergency valve with an apportioning valve for optimized performance. Its adjustable predominance, ranging from 0 to 1 bar, allows for precise control of brake application. The valve features M22 x 1.5 port threads (1, 2, 3, and 4) and mounting holes of 2x Ø 11.0 mm. With dimensions of 144 x 210 x 259 mm, this OE specification valve ensures reliable and responsive emergency braking, enhancing safety and preventing runaways. It operates within a temperature range of -40°C to +80°C.

Key Features & Benefits

This valve basically controls the air supply to your air brake system when there's a critical loss of air pressure. It’s got a couple of main jobs. First, it automatically applies the spring brakes – those big emergency brakes – if the air pressure drops too low. Think of it like a safety net. Second, it isolates the air tanks, so you don't lose all your air instantly if you spring a leak somewhere. It’s a bit like patching a hole in a tire to keep from going flat immediately. It sits within your air brake system, specifically between your air compressor, reservoirs, and the brake chambers themselves. It’s a key part of the relay valve network. It’s constantly monitoring the air pressure. Normally it allows air to flow freely, providing pressure for regular braking. But the instant it senses a significant pressure drop, it springs into action and initiates the emergency brake application. It acts like a shield, preventing a runaway situation if you lose air pressure while driving.

Symptoms, Risks & Replacements

Honestly, this is a safety component through and through. If this valve fails, you could end up without emergency braking, which, well, you can imagine isn’t a good spot to be in. You’ll notice if it's failing if your emergency brakes engage unexpectedly, or if you have trouble applying them when you need to. They’re crucial for preventing accidents, particularly with heavier vehicles that rely on air brakes. You can find these, and a lot of other air brake components, over at Fixparts Online if you’re doing some maintenance. It’s something you really don’t want to gamble with; regular inspection and replacement when needed is the smart move.

Warranty Information

Wabco Emergency Shutoff Valve (MPN 9710025807) comes with a 1-year warranty.