$44799
14 Day Lead Time
The WABCO Air Brake Relay Valve is a precision-engineered pneumatic component designed to improve air brake response and timing in heavy-duty commercial vehicle brake systems. Featuring a low 0.7 bar opening pressure, this valve activates quickly when a brake signal is applied, helping reduce brake lag by delivering air closer to the brake chambers. It supports a maximum operating pressure of 13 bar, allowing it to perform reliably under demanding load and operating conditions. The compact, durable design enables direct installation into existing truck or trailer air circuits, where it improves air delivery efficiency while maintaining consistent brake system performance. Built to WABCO OEM specifications, the WABCO 9730110280 relay valve provides dependable operation and long service life in harsh road environments.
| Calculated Volume | 1.073 |
| Exhaust | Snap on contour JED - 463 |
| Maximum Operating Pressure | 13 Bar |
| Opening Pressure | 0.7 Bar |
| Port 1 Thread Size | 1/2"-14 Dry Seal NPTF |
| Port 4 Thread Size | 1/4"-18 Dry Seal NPTF |
| Predominance | 0.20 Bar |
| Regulating Ratio | 01:01 |
| Temperature Range | -40°C to +80°C |
| Version | Pressure Reduction |
| Brand | Part Number |
|---|---|
| MERITOR | S9730110280 |
Whether it’s for cars, buses, trucks, or trailers, WABCO® is at the frontline at developing and providing products and systems to make vehicles safer and easier to control. Founded in 1869, WABCO is a major supplier of braking, stability, suspension and transmissions in the Americas and beyond. The company is recognized as introducing the modern air brake system in 1869, and continues to lead the industry in air brake design and production for the heavy duty and commercial vehicle sectors. Today, WABCO operates as a division of the German auto parts maker ZF and employs 16,000 employees in facilities in 36 countries worldwide.
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