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(888) 312-8812 Login SignupWABCO R90555398 Air Brake Pressure Protection Valve
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MSRP: $193.08
$9149
Save $101.59
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Get it by Wednesday, Mar 18
WABCO R90555398 Part Description
Manufacturer
Product Description
Air Brake Pressure Protection Valve
Features & Benefits
- Factory-preset opening pressure to ensure primary brake reservoirs reach safe levels before auxiliary air flow
- Automatic isolation of secondary circuits to protect the main air supply during downstream component failure
- Corrosion-resistant internal components to prevent valve sticking and ensure reliable cycling in humid environments
- Standard 1/4-inch NPT ports to allow for seamless integration into existing heavy-duty air lines
- High-flow internal orifice to provide rapid recovery for air-hungry accessories once safety thresholds are met
WABCO Air Brake Pressure Protection Valve
The WABCO Air Brake Pressure Protection Valve serves as a vital safeguard for the pneumatic system by closing off auxiliary air lines if the primary reservoir pressure drops below a critical safety threshold. By prioritizing the air supply for the service brake and emergency circuits, the WABCO R90555398 prevents a leak in a non-essential accessory—such as an air seat or sleeper slide—from draining the entire vehicle's air supply. This valve is engineered with a corrosion-resistant internal spring and poppet assembly that remains closed until the system reaches its pre-set opening pressure, ensuring the driver always has sufficient braking force available before secondary systems are activated. Its inline design and robust housing make it a standard choice for heavy-duty vocational trucks where multiple air-powered tools and accessories are integrated into the main chassis plumbing.
Pressure Protection Valve
WABCO R90555398 Specifications
Product Attributes
| Weight | 0.53 |
| Max. operating pressure | 155.19 psi |
| Max. operating pressure | 155.19 psi |
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WABCO R90555398 Manufacturer Information
Whether it’s for cars, buses, trucks, or trailers, WABCO® is at the frontline at developing and providing products and systems to make vehicles safer and easier to control. Founded in 1869, WABCO is a major supplier of braking, stability, suspension and transmissions in the Americas and beyond. The company is recognized as introducing the modern air brake system in 1869, and continues to lead the industry in air brake design and production for the heavy duty and commercial vehicle sectors. Today, WABCO operates as a division of the German auto parts maker ZF and employs 16,000 employees in facilities in 36 countries worldwide.
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