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This is an R-12 type air brake relay valve used in the air systems of rear discharge concrete mixers and other heavy-duty vehicles. A relay valve functions as a remote-controlled brake valve, installed near the rear brake chambers to speed up brake application and release, correcting for the time it takes air to travel the length of the vehicle. Replacing a faulty relay valve is critical for ensuring safe and responsive braking performance. This valve is a common service part for brands like McNeilus, and is suitable for Kimble mixer applications.
Technical Specifications
Valve TypeR-12 Style Relay Valve
Supply Port Size1/2 inch NPT
Delivery Port Size1/2 inch NPT
Control Port Size1/4 inch NPT
Crack Pressure5.5 PSI
Mounting4-hole bracket with .96 IN x .40 IN slots
Key Features
Speeds up application and release of rear air brakes.
Standard R-12 design for broad compatibility with heavy-duty trucks.
High-capacity and fast response for demanding environments.
Typically features two supply ports and two delivery ports.
Reduces brake lag for improved safety.
Fits These Mixers
McNeilus, Con-Tech, CBMW, Kimble. Fits various rear discharge mixer trucks that utilize a standard R-12 type air brake relay valve, including McNeilus and Con-Tech models. It is a suitable service replacement part for Kimble chassis air brake systems.
All measurements ± standard manufacturing tolerance.
Product descriptions are drafted with automated tools and reviewed as time allows. While we work to keep them accurate, specifications and fitment should be confirmed with a Customer Service specialist at 800-745-3414 before purchase. Found an error? Let us know and we’ll fix it.
Specifications
Specifications
Manufacturer
Kimble
Sub Category
Air Systems
Documentation
No documents available
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