Double check valves take air from whichever of two lines is at the higher pressure and pass it on, closing off the other. This is how a circuit can be fed from either the service line or a secondary supply without the two lines feeding back into each other.

This category lists 5 Büyükdemir references cross-referenced against 28 original equipment numbers. The cross-reference tables cover DAF, Volvo, Iveco, Scania and Renault parts.

Most looked-up references in this group: Double Check valve / Zweiwegeventil 4-4800, Double Check Valve 4-4810, Double Check Valve 4-4803, Double Check Valve 4-4801, Double Check Valve 4-4802.

Manufactured by Büyükdemir Otomotiv in Istanbul, a producer of truck and trailer air system parts since 1957.

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Double Check valve / Zweiwegeventil 4-4800

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Double Check Valve 4-4801

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Double Check Valve 4-4802

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Double Check Valve 4-4803

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Double Check Valve 4-4810