Vacuum Release ValvePart No. PNR-1G
The valve will allow atmospheric air pressure into the vacuum reservoir to release the brakes on a detached vehicle. The brakes will come off, as the air pressure equalizes each side of the diaphragm.
Before this device is used it should be established that the vehicle in question can not roll out of control.
Thread size = 1/4″ NPT
Overall Length = 1 3/4″
What’s in the box?
1 x Release valve
See a Schematic of the Vacuum Braking System.
Read our Buying Guide for Vacuum Brakes