9730010200 Relay Valve Max. operating pressure10.0 bar Custom

9730010200 Relay Valve Max. operating pressure10.0 bar

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  • A relay valve is an air-operated valve typically used in air brake systems to remotely control the brakes at the rear of a heavy truck or semi-trailer in a tractor-trailer combination. Relay valves are necessary in heavy trucks in order to speed-up rear-brake application and release, since air takes longer to travel to the rear of the vehicle than the front of the vehicle, where the front service brakes, foot-valve, parking-control valve, and trailer-supply valve (if applicable) are located.

    Without relay valves, it would take too long for sufficient air to travel from the brake pedal valve to the rear of the truck or trailer in order to apply the rear service brakes concurrently with the front service brakes, resulting in a condition known as brake lag. To correct this condition on a long-wheel-base vehicle, a relay valve is installed near the rear service brake chambers. In tractors as well as straight-trucks, a remote air-supply is provided in the form of a large diameter pipe connected between the primary reservoir and the relay valve for remote service brake application.

    In a truck’s air brake system, relay valves get a signal when a driver presses the treadle, which then opens the valve and allows air to enter the brake chamber via air inlet. The diaphragm gets pushed, then the rod, then the slack adjuster which twists to turn the brake camshaft. Next, it moves the disc, wedge or s-cam, which pushes the brake shoes and lining, creating friction. This friction slows and eventually stops the brake drum’s turning, which stops the wheel

    Connection 1 M22x1,5
    Connection 2 2x M16x1,5
    Connection 4 M16x1,5
    Weight 993.00 g

Zhuji Oubote Auto Parts Co., Ltd.

Zhuji Oubote Auto Parts Co., Ltd. as China Custom 9730010200 Relay Valve Max. operating pressure10.0 bar Suppliers,Our factory specializes in manufacture of air brake parts for commercial vehicles, semi trailers and heavy vehicles. Its main products are: foot brake valve, unload valve, trailer valve, hand brake Valve,load sensing valve, leveling valve, relay valve, air dryer, clutch servo and so on. Some products are matched with large domestic automobile manufacturers and exported to Southeast Asia, America, the Middle East, Africa and other regions.
Q. Where are your goods mainly exported?
Our products are mainly exported to Egypt, Nigeria, the United States, Chile, Brazil, Argentina, Turkey, Iran, Iraq, Dubai, Russia, Auckland, Algeria and dozens of other countries and regions.
Q. How to deliver goods to customers?
According to Customers requirement. Any shipment is available from us.
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