Multiple circuit air brake protection valve - with flow restriction valve in supply line to pressure relief valve

摘要

The multi circuit protection valve for the air brake system has a flow restriction valve (25) in line with the venting valve (51), inside the supply port to the valve. The flow restriction is on the reverse of the closing valve (7) element for a compact layout. The system provides a controlled flow of the valve with a precise location of the disc comprising the flow restriction. The flow rate does not alter with time as the flow restriction disc is not subjected to wear.