Beiben V3 accessories share with you that there is no need to rush to stop if the gas path is damaged? This will save more time. When a circuit in the braking system is damaged, we should drive to a nearby repair point for repair after confirming that other components are undamaged. Why do you want to do this?

Let's first take a look at the "protection device" four-circuit protection valve in the braking system. After understanding it, we will know why not stop in a hurry when a circuit in the braking system is damaged!

● Operating principle of four-circuit protection valve

According to different applications, four circuits are connected in parallel, and the air pressure is charged simultaneously, or circuits 1 and 2 are inflated before circuits 3 and 4. Some models of four-circuit protection valves have a bypass hole in all circuits to ensure that if one circuit fails, the brake system begins to inflate from 0 bar.

Compressed air from the pressure regulating valve enters the four-circuit protection valve through port 1, and enters the four circuits of the system through bypass holes (a, b, c, d) and one-way valves (h, j, q, r). At the same time, the pressure is also established under the valve (g, k, p, s). When the set opening pressure (protection pressure) is reached, the valve opens, and the diaphragm (f, i, o, t) once again overcomes the force of the spring (e, m, n, u) to bulge. Then, compressed air flows into the first and second circuit air reservoirs of the service brake system through ports 21 and 22, and enters circuits 3 and 4 through ports 23 and 24. The 3-circuit supplies air to the emergency and parking brake systems of trucks, as well as to the trailer. Beiben V3 accessory 4-circuit supplies air to the auxiliary braking system.

The Beiben V3 accessory four-circuit protection valve (hereinafter referred to as the four-circuit protection valve) is composed of multiple pressure limiting check valves (usually four) arranged according to a certain relationship, and some of them are appropriately attached with other functional mechanisms to achieve a shunt supply of air in the commercial vehicle braking system to ensure the independent and normal operation of each circuit

In the four-circuit braking system of Beiben V3 accessory, if one or more circuits fail, the braking pressure of the intact circuit can be maintained.

If you see that the air pressure in the front axle circuit is low (leaking), other circuits can still supply air. If you see that the air pressure in the rear axle circuit is gone, stop the vehicle in a timely manner and use the remaining braking efficiency to park the vehicle in a safe area for a short time.

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