International Truck 1670-556-C91 Valve

- Type CR - Controlled Response Height Control Valve
- All ports are 1/8in NPT.
- Original equipment on many Trucks and Trailers
- Automatically adds air to, or exhausts air from air suspension to maintain constant static design height.
- Does not respond to short duration dynamic changes in axle position, thus reducing air consumption which extends compressor life and saves fuel.

Top Port – Exhaust
Middle Port – Air Spring
Bottom Port - Supply

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