Description
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.
Key data for this version: size / thread 84 mm · M22 X 1.5. The Buyukdemir reference is 4-4803.
It belongs to the Double Check Valve · Check Valve · Stopcock · Four-way Cock range in the Buyukdemir catalogue.
It cross-refers to the original equipment numbers 003 429 70 44, 004 429 15 44, 434 208 027 0, 1517990.
The same part is made in other version options: Double Check Valve, 76 mm · M16 X 1.5 (4-4801), Double Check Valve, R 3/8" (4-4802), Double Check Valve, 100 mm · M22 X 1.5 (4-4810), Double Check Valve / Zweiwegeventil, 76 mm · M22 X 1.5 (4-4800), Check Valve / Rückschlagventil, M22 X 1.5 (4-4850).
Manufactured by Büyükdemir Otomotiv in Istanbul, Türkiye, a producer of compressed-air brake and pneumatic components for trucks and trailers since 1957.
