Product Description
The Bendix 801993 BR9235 ABS Modulator/Relay Valve is a heavy-duty pneumatic and electronic braking component designed for commercial trailer anti-lock braking systems. Combining conventional relay valve operation with electronically controlled ABS modulation, this valve helps deliver responsive braking performance while reducing the risk of wheel lockup during sudden stops or slippery road conditions.
During normal service braking, the BR9235 operates as a relay valve, delivering compressed air from the supply reservoir to the brake chambers in response to the service brake control signal. When ABS intervention is required, the integrated solenoid responds to commands from the ABS electronic control unit (ECU), adjusting brake chamber pressure to help maintain wheel rotation and vehicle stability.
The 801993 features a 12-volt electrical system, 3 PSI crack pressure, and four delivery ports for compatible trailer braking configurations. Its durable construction and integrated exhaust mechanism are designed for demanding commercial vehicle service.
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Genuine Bendix BR9235 ABS modulator/relay valve
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Manufacturer Part Number: 801993
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Designed for compatible commercial trailer ABS systems
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12-volt electrical operation
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3 PSI nominal crack pressure
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One 3/4"-14 NPT supply port
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Four 3/8"-18 NPT delivery ports
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DIN 72585 bayonet-style electrical connector
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Integrated pneumatic relay valve function
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Electronically controlled ABS pressure modulation
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Flap-style exhaust configuration
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Helps prevent wheel lockup during ABS activation
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Supports responsive brake application and release
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New aftermarket-service replacement
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Mounting bracket not included
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Sold individually
The Bendix 801993 replaces original equipment part number 5012023. Additional cross-reference numbers include 5011777, 5012023N, and World American WA1311993.
Before ordering, verify the original valve part number, electrical connector, mounting configuration, air port sizes, and crack pressure. The BR9235 is available in multiple configurations, including versions with different crack pressures and mounting brackets.
The 801993 specifically features a 3 PSI crack pressure and is supplied without a mounting bracket. Bendix 801994 is the corresponding 3 PSI version with a mounting bracket.
