Product Description
The Bendix 802938 TP-5 Tractor Protection Valve is a heavy-duty air brake component designed to protect the tractor's compressed air supply if trailer air lines become disconnected, damaged, or experience a significant loss of pressure. By controlling air delivery between the tractor and trailer, this valve helps maintain proper braking operation and protects the tractor's air system from excessive pressure loss.
The 802938 features an integrated service-line shutoff valve, quick-release function, and dual double-check valves within a single housing. This arrangement reduces the need for separate pneumatic components and simplifies air brake system plumbing.
Designed for firewall mounting, the valve features threaded supply, service, and control ports for compatible tractor-trailer air brake systems. Its durable construction supports dependable operation in demanding commercial vehicle environments.
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Genuine Bendix TP-5 tractor protection valve
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Part Number: 802938
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Firewall-mounted configuration
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Integrated trailer service-line quick-release function
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Dual double-check valve design
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1/2"-14 NPT trailer supply port
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1/2"-14 NPT trailer service port
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Dual 3/8"-18 NPT tractor control ports
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1/4"-18 NPT trailer control port
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Service-line opening pressure: 50 PSI maximum
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Service-line shutoff pressure: 10 PSI minimum
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Operating temperature range: -40°F to 221°F
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Four mounting holes measuring approximately 0.34 inches
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Designed for compatible commercial tractor air brake systems
The TP-5 valve helps isolate the trailer service circuit when trailer supply pressure is lost, reducing the risk of exhausting the tractor's air supply through a disconnected trailer line.
Before ordering, verify the original valve part number, mounting configuration, port locations, and connection sizes. TP-5 valves are manufactured in several configurations and are not universally interchangeable.
