Controlling Train Brakes

Controlling Train Brakes

Controlling Train Brakes

A Proportion-Air electronic pressure regulator is air piloting a J-relay valve which controls pressure going to the brakes on a locomotive. Controlling train brakes with electro-pneumatic valves from Proportion-Air brings extreme repeatability and excellent durability.

To apply brakes, pressure is proportionally vented from the dome of the J-valve by the Proportion-Air device.

This application shows the Proportion-Air electronic regulator being controlled by the locomotive’s computer. The computer receives its signal from a remote radio controller, which allows the operator to be located outside the locomotive where they can also move rail yard switches and connect rail cars to the train.

The Proportion-Air devices such as the QB1 or the QB3 are ideal for this application – they are not affected by shock and vibration up to 20Gs, do not require instrument air and they are very robust and reliable.

Learn how Proportion-Air products can also be used to control Train Throttle response as well. 


Request Quote

Subscribe To Our Newsletter

Join our mailing list to receive the latest news and updates from our team.

You have Successfully Subscribed!