Kimble Air Pressure Regulator

Kimble Air Pressure Regulator

This valve, often mislabeled as a regulator, is a critical safety component for the air system on concrete mixer trucks. It functions as a pressure protection valve, safeguarding the primary air brake system by isolating auxiliary air circuits (like those for a tag axle or chute controls) if a leak occurs. This ensures that sufficient air pressure is always reserved for braking. This specific model is a Bendix PR-4 style valve, featuring 1/4" NPT ports and a non-adjustable nominal closing pressure of 70 PSI. It is a necessary replacement part when an existing valve fails or leaks, which could otherwise compromise the entire air system.

Key Features

• Protects the primary air brake system from pressure loss in auxiliary circuits.
• Automatically closes when system pressure drops below the nominal 70 PSI.
• Bendix PR-4 style design for broad compatibility.
• Features 1/4 inch NPT supply and delivery ports.
• Durable cast body construction.
• Non-adjustable for consistent and reliable performance.

Fits These Mixers

McNeilus, Con-Tech, CBMW, Kimble. Fits various heavy-duty trucks and concrete mixers that utilize a Bendix PR-4 style pressure protection valve for their auxiliary air systems. It is commonly used when adding air-operated accessories like air tailgate latches, air-shifted PTOs, or air-controlled levers to ensure brake system integrity.

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.