Wabco 8930700944 Union Nut

Description

The Wabco 8930700944 Union Nut is a critical component within air brake systems, specifically used for creating secure and leak-proof connections in air lines. It's typically found in heavy-duty trucks, buses, and trailers where reliable braking performance is essential. This union nut is manufactured to OE specification, ensuring a precise fit and consistent operation that meets the stringent demands of commercial vehicle air brake systems. Its dimensions are 20 x 27 x 31 mm, and it features a M22 x 1.5 thread and a 27.0 mm wrench size.

Key Features & Benefits

This little guy essentially joins two sections of air brake line together. It's a threaded connector, so it screws onto the ends of the lines and tightens everything up to create a sealed connection. It has a built – in sealing surface; think of it like a really precise, metal gasket that makes sure no air leaks out. It’s part of your air brake system, which, obviously, is vital for stopping the vehicle. Specifically, it’s found wherever you have air lines connecting to components like the air dryer, air tanks, or the brake chambers themselves. It’s a fairly common fitting, used throughout the whole system to make those secure connections.

Symptoms, Risks & Replacements

Air brakes need to be completely airtight to work properly. Any leak, even a small one, can reduce braking efficiency and that’s a serious safety issue. The Union Nut, when properly tightened, acts like a shield, preventing air from escaping at that joint. You’ll notice if one starts to fail – you’ll likely hear a hissing sound, or your air compressor might be running more often than usual to try and maintain pressure. They're a relatively inexpensive part, honestly, and replacing a worn or damaged one is a lot cheaper than dealing with brake failure. You can find them pretty easily at places like Fixparts Online, and they’re not terribly difficult to replace if you’re comfortable with basic wrench work.

Warranty Information

Wabco Union Nut (MPN 8930700944) comes with a 1-year warranty.