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Safety Valves (Brass Type 4-4909

Safety Valves (Brass Type) 4-4908
Relief Valve 4-4820
Opening Pressure Port Thread Original Ref. BD Ref.
19 Bar M22 x 1,5 1377964 (Scania) 4-4909
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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 19 Bar, port thread M22x1.5. The Buyukdemir reference is 4-4909.

It cross-refers to the original equipment numbers 1377964.

This is the 19 Bar version; the nearest sizes in the same range are 19 Bar (4-4906), 20 Bar (4-4901), 15,5 ± 1 Bar (4-4907), 15 + 1,5 Bar (4-4908), 14,3 Bar (4-4905).

Manufactured by Büyükdemir Otomotiv in Istanbul, Türkiye, a producer of compressed-air brake and pneumatic components for trucks and trailers since 1957.