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Bendix · Electrical & Lighting
229635
In stock · ships from Knoxville
The Bendix TW-1 (part number 229635) is a lever‑operated air brake control valve used on heavy‑duty trucks and trailers.
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Other applications
Store listing calls this an 'Emergency Shut Off Switch' and places it in Electrical & Lighting, but the actual part is a pneumatic control valve (Bendix TW‑1). Not an electrical component.
Part data verified against 4 catalog sources
Numbers this part supersedes or interchanges with. Showing 13 of 13.
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It allows the driver to manually apply the trailer brakes independently—commonly to hold the vehicle on a grade, test trailer brake adjustment, or serve as an emergency parking brake. This is a mechanical air valve, not an electrical switch, despite being labeled as an “emergency shut off switch” in the store inventory. Replacement is typically needed when the valve develops air leaks, the lever becomes stiff, or the valve fails to release properly.
Part Number: 229635
EMERGENCY SHUT OFF SWITCH
Unit: ea
Vendor: Aurora Parts & Accessories
Dealer: Post Onsite
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Parts commonly needed alongside electrical & lighting
