Volvo vnl 780 air assisted hydraulic clutch. The valve I was pointing at is a air pressure protection valve or a brake pressure protection valve. part number S9348990740 The actual tractor protection valve is on the back of the cab where the trailer lines go in. This valve does a similar thing it just protects the brakes from the accessories instead of from the trailer.
Link to the valve I was pointing at amzn.to/3197t6I
6 сен 2024