20382347 S2 Valve Plate Equivalent for Volvo 8500

What does a compressor valve plate do?

The compressor valve plate is a precision-machined component seated between the cylinder block and the cylinder head of an air brake compressor. It functions by providing the seating surface for the intake and discharge reeds, ensuring that air flows in a single direction during every piston stroke. This critical part is essential for maintaining consistent pressure within the pneumatic braking system of heavy commercial vehicles.

Vehicle compatibility and fitment

This specific valve plate is compatible with Volvo 8500 trucks. To ensure correct fitment, technicians should verify the compressor housing details, as different compressor types may be utilized within the same vehicle model. It is recommended to compare the port layout and plate thickness with the removed component to guarantee a perfect match.

Installation and maintenance

When replacing this component, ensure the cylinder head and block surfaces are clean and free of debris. Proper installation is vital to prevent air leaks and maintain the correct valve lift distance. Maintaining regular inspection intervals for these high-strength components helps prevent unexpected downtime in heavy-duty operations.

Troubleshooting and selection

If you observe a drop in air pressure or irregular compressor cycling, it may indicate wear on the valve plate or its reeds. Consulting your authorized distributor can help confirm the exact requirements for your specific braking system.

OE cross-reference

13 01 12 (Compressor Valve Plate) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 20382347S2.