WABCO Relay Valve 9730110010 Fast Response Air Brake Valve for Heavy Duty Truck Air Brake System

The WABCO WABCO Relay Valve (part number 9730110010) is a replacement component for the air brake and air suspension systems of heavy-duty trucks, buses and semi-trailers. It is built to original equipment specification from quality materials, so it installs on the original mounting points and performs reliably throughout the service life of the vehicle. Key ratings include Max Working Pressure 10 bar, temperature range -40°C ~ +80°C, Port Thread M22*1.5 (inlet), 2*M22*1.5 (outlet), M16*1.5 (control port), Voss thread, Opening Pressure 0.2 bar.

A large flow path delivers compressed air to the brake chambers almost instantly, sharply reducing brake response time and improving the harmony between the individual wheel brakes. Robust internal parts resist vibration and contamination, so output pressure stays stable over a long service life.

Every unit is manufactured to original equipment specification and inspected before it leaves the factory, so it matches the fit, function and durability of the original part. Sealed, vibration-tested construction keeps performance stable in the heat, dust, road salt and constant vibration found on commercial vehicles, and standard interfaces make installation and maintenance straightforward. Spare parts, technical data and fitting advice are available on request.

• Max Working pressure:10 Bar: Temperature range -40°C ~ +80°C.
• Port Thread: M22*1.5 (inlet): 2*M22*1.5 (outlet), M16*1.5 (control port), Voss thread.
• Opening pressure:0.2 Bar: Predominance pressure:0.1 bar.
• It Rapidly Supplies Large Volume Compressed Air: To brake chambers, shortens brake response time.
• 1:1 Pressure Ratio: Stable output pressure, improves braking synchronisation.
• OE Original Quality: Compact structure, durable for harsh vibration environment.

The valve is used on the pneumatic brake systems of heavy trucks, buses and semi-trailers, including long-haul tractors, tippers and coaches. It is chosen where fast, well-controlled delivery of compressed air to the brake chambers is needed for short stopping distances and balanced braking.

Every unit is packed in a neutral export carton with foam protection so that ports, connectors and levers arrive free from damage. OEM cartons and private labels are available on request, and each carton is labelled with the part number for simple warehouse handling. All units are produced to original equipment specification and inspected before shipment; a twelve-month quality warranty and full technical support are provided, and mixed containers can be supplied for distributors and repair workshops. Please contact us for samples, volume discount pricing and confirmed lead times.