Description
The circuit protection valve divides the compressor’s output between the separate brake circuits and keeps them apart. If one circuit is damaged and loses pressure, the valve closes that branch and holds the pressure in the others, so the vehicle keeps a working brake system on the circuits that are still sound. It also sets the order in which the circuits fill from empty.
The Buyukdemir reference for this item is 4-6100.
It belongs to the Quadruple Circuit Protection Valve / Vierkreis-Schutzventil range in the Buyukdemir catalogue.
It cross-refers to the original equipment numbers 934 702 300 0, 0 481 062 105, 934 702 320 0, 0 481 062 108, 934 702 381 0, 0 481 062 308, 0 481 062 005, 0 481 062 407, 0 481 062 008, AE 4138, 0 481 062 012, AE 4158, 001 431 30 06, AE 4178, 001 431 38 06, AE 4179, 001 431 58 06.
Related items in this range: 4-6200.
Manufactured by Büyükdemir Otomotiv in Istanbul, Türkiye, a producer of compressed-air brake and pneumatic components for trucks and trailers since 1957.
