Product Description
The Bendix 800588 TP-5 Tractor Protection Valve is a heavy-duty pneumatic control valve designed to protect a commercial truck's air brake system from excessive air loss when trailer air lines become disconnected, damaged, or experience a significant pressure drop. By automatically isolating the trailer service air circuit, this valve helps preserve the tractor's compressed air supply and maintain dependable braking operation.
Designed for cab or chassis mounting, the 800588 combines a service-line shutoff mechanism, integrated quick-release functionality, and double-check valve operation in a single assembly. Its push-to-connect fittings simplify installation and provide secure connections for compatible air brake tubing.
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Genuine Bendix TP-5 tractor protection valve
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Manufacturer Part Number: 800588
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Cab or chassis mounting configuration
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Push-to-connect (PTC) air line connections
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1/2" PTC primary tractor control port
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3/8" PTC secondary tractor control port
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1/2" PTC trailer control port
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1/2" PTC trailer service port
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3/8" PTC trailer supply port
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3/8" PTC tractor protection port
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3/8" PTC stop light switch port
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Integrated trailer service quick-release functionality
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Maximum service-line opening pressure: 50 PSI
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Minimum service-line shutoff pressure: 10 PSI
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Operating temperature range: -40°F to 200°F
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Designed for compatible commercial tractor-trailer air brake systems
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Cross-reference numbers include 2506192C91 and 5006728
The TP-5 valve helps prevent a damaged trailer service line from exhausting the tractor's air supply. Its integrated design also reduces the number of separate components required in compatible pneumatic brake systems.
Before ordering, verify the original valve part number, mounting configuration, port sizes, and connection locations. Bendix TP-5 tractor protection valves are available in multiple configurations and are not universally interchangeable.
Important: This particular 800588 configuration uses push-to-connect ports. Other TP-5 valves may have threaded NPT connections, so verify the physical valve before substituting another part number.
