The go-to constant duty compressor for years, the USR C4 Air Compressor has been trusted to power some of our most popular train horn kits throughout the years. As one of the hardest working compressors, we offer, managing a100% duty cycle @ 100 PSI. Allowing your system to power air suspension, tire inflation, air tools, and more in addition to powering your horns. While not as fast as some other USR Air Compressor models, the USR C4 still boastsimpressive performance for its class, providing 1.76 CFM output. The Viair 444C will recharge a2.5-gallon tank from 165-200 PSI in just over a minute and a halfand recharge a5-gallon tank in just under three minutes.
The USR C4comes complete with a standard 1/4″ NPT stainless steel braided leader hose with a check valve and insulated wiring for fast installation.
It manages 1.76 CFM and works optimally for air tanks from 2.5GAL to 5GAL.
Note:Use thread sealant for proper installation. Thread tape is not recommended. Properly sealed, recommended torque for 1/8″ is 10 ~ 11 ft. lbs. Recommended torque for 1/4″ and 3/8″ is 12 ~ 15 ft. lbs.