Screenshot 2023-01-15 at 21.56.06

Relief Valve 4-4821

Relief Valve 4-4820
Safety Valve 4-4920
Original Ref. BD Ref.
1626982 (Volvo) 4-4821
1505049 (Volvo)
7421386775 (Renault)
125351 (Knorr)
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Description

Relief valves open when the pressure behind them exceeds the set figure and close again once it drops, so the circuit cannot be over-pressurised if a regulator fails.

The Buyukdemir reference for this item is 4-4821.

It cross-refers to the original equipment numbers 1626982, 1505049, 7421386775, 125351.

Related items in this range: 4-4820, 4-4822.

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