Description
Safety valves blow off when reservoir pressure passes the set figure and reseat once it falls back. They are the last protection against over-pressure if the governor or the unloader fails, and they are set and sealed by the maker.
Key data for this version: opening pressure 17+2 Bar, thread M26x1,5. The Buyukdemir reference is 4-4911.
It cross-refers to the original equipment numbers 51.54122.0002, 51.54122.0003, 51.54122.0007, 51.54122.0011, 51.54122.8001, 504128766, 0001312155, 5010422601, 20590786.
This is the 17+2 Bar version; the nearest sizes in the same range are 15 Bar, M26x1,5 (4-4912), 19+2 Bar, M16x1,5 (4-4916), 13 Bar, M26x1,5 (4-4914), 10 Bar, M26x1,5 (4-4915), 9 Bar, M26x1,5 (4-4913).
Manufactured by Büyükdemir Otomotiv in Istanbul, Türkiye, a producer of compressed-air brake and pneumatic components for trucks and trailers since 1957.
