Wabco 9750090010 Pressure Limiting Unit

Description

The Wabco 9750090010 Pressure Limiting Unit is a critical component within air brake systems, specifically designed for Mercedes vehicles. This air control unit regulates air pressure, ensuring optimal braking performance and safety. It features a calculated volume of 0.86016, delivers a pressure of 5.5 at 8.5 bar, and operates within a temperature range of -40°C to +80°C. With port threads of M16 x 1.5 JED-388-3, this unit provides a reliable and precise pressure limitation, contributing to enhanced system stability and extended component life. It measures 112 x 64 x 120 mm and utilizes a Bayonet DIN 72585 A1-2.1-Sn/K2 electrical connection, while supporting a nominal flow rate of 0.025 (L/min). This device is manufactured to OE specification, ensuring a perfect fit and function.

Key Features & Benefits

This thing basically controls the maximum air pressure that gets sent to your brake chambers. It takes the high – pressure air from your air compressor and reduces it to a safe, usable level for applying the brakes. It’s got an inlet for the high pressure, an outlet to the brakes, and a way to adjust that maximum pressure. Some models also have a “quick release” feature to help speed up brake response. It’s a key piece of your air brake system, primarily on trucks and larger vehicles. Think of it as a regulator. The compressor makes a lot of pressure, more than the brake actuators need. This unit steps that down to something manageable. Without it, you’d be sending way too much force to the brakes, potentially locking them up or damaging components. It works alongside other valves – like the relay valve and the quick release valve – to give you smooth, reliable braking.

Symptoms, Risks & Replacements

This is a safety item, plain and simple. If it fails, you could have brakes that don't apply properly, or that apply too strongly. You’ll notice if it’s starting to go bad because your brakes might feel spongy, or you may have trouble getting a full, firm brake application. It prevents over – pressurization which could damage the brake chambers or lines. It’s something you definitely don’t want to ignore. You can find replacements pretty easily – we carry a good selection at Fixparts Online, and lots of other suppliers do as well. Just make sure you get the right one for your vehicle’s make and model.

Warranty Information

Wabco Pressure Limiting Unit (MPN 9750090010) comes with a 1-year warranty.