High Quality Trailer Dolly Legs - 6 port relay valve use for 3 axle brake system – MBP

Type: TRUCK AND TRAILER
Size: M22*1.5;M16*1.5
Material: Aluminum Alloy
Place of Origin: FOSHAN, China
OEM No.: 971 002 1510, 971 002 1520，3518MA
Relay valve is a part of automobile air brake system. In the brake system of truck, relay valve can shorten reaction time and pressure build-up time
The air inlet of the relay valve is connected with the air reservoir, and the air outlet is connected with the brake chamber. When the brake pedal is pressed, the output air pressure of the brake valve is used as the control pressure input of the relay valve. Under the control pressure, the air inlet valve is pushed open, so the compressed air enters the brake chamber directly through the air inlet from the air reservoir instead of flowing through the brake valve, which greatly shortens the charging pipeline of the brake chamber and accelerates the charging process of the air chamber. Therefore, the relay valve is also called acceleration valve.

The relay valve is used at the end of a long pipeline to make the compressed air in the air reservoir fill the brake chamber quickly, such as in the braking system of a trailer or semi-trailer.

Differential relay valve is generally used. The driving and parking system shall be prevented from operating simultaneously, and the force overlap in the combined spring brake cylinder and spring brake chamber, so as to avoid overload of mechanical transmission components to make the spring brake cylinder charge and exhaust rapidly.

Relay emergency valves are commonly used on pre-121 trailers and in current off-highway braking systems and trailer converter dollies. The relay emergency valve is a dual function valve. Under normal braking conditions, it serves as a relay valve, applying and releasing the service brakes. The emergency portion of the valve senses supply line pressure and should pressure in the supply line fall below a predetermined minimum, the valve will automatically apply the vehicle service brakes from its own protected reservoir.

The RE-4 and RE-6 relay emergency valves are piston operated and are available in both remote and reservoir mount configurations. Both valves provide easy removal of the inlet/exhaust valve cartridge assembly without line removal. The RE-4
and RE-6 are interchangeable in both fit and function.

Cross References: 2281865, 281865R, 101197, 101197X, 281860514658, 846938, R955281865, 281672, 281864, 281862, 285708, 283034, 284103, 288724, 5001242, 7J7235, E4037833, M1567182, M2511014, 48206099, 1663363, 16A63363, 4037833, EBN281865N, 7271, ACC049418, AND91477, ARA32601, 6B277445, 2471955, 9016927, 9018245, 4900093, 37025, 83073240, 41188, 41308, KN30300, KN30400, 31A1631, 50652874, 281865B1, 10TN856, 3TN420, S7558, 110268, 110470, 401130, 1936001006, 936001004, 14033, 1019237, 1019238, 9049029, 9051594, 38072, 4017762, 4184001, 034029, 1092941, 1998530001, 21406050

A cross reference listing means that this valve is a suitable replacement for the part numbers listed. Some changes in air line plumbing may be required.

FAQ

Q1. What is your terms of packing?
A: Generally, goods are sealed in ploy bags and packed in cartons and pallet or wood cases.

Q2. What is your terms of payment?
A: T/T (deposit + balance before delivery). We’ll show you the photos of the products and packages before you pay the balance.

Q3. What is your terms of delivery?
A: EXW, FOB, CFR, CIF.

Q4. How about your delivery time?
A: Generally, it will take 25 to 60 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.

Q5. Can you produce according to the samples?
A: Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.

Q6. What is your sample policy?
A: We can supply the sample for free charge if we have ready parts in stock, but the customers have to pay the courier cost.

Q7. How do you make our business long-term and good relationship?
A: We provide our clients with one-stop service, from specific component to final assembled products, solving various problem for different clients all over the world.