All V-Series Supplied Air Valves require a supplied air hose to complete the NIOSH-approved respirator system. These hoses are available in many different lengths and are sold separately.
3M 37019, Versaflo Air Regulating Valve Assembly V-300/37019(AAD), 7100077491, 1 EA/Case
$224.35
Factory Stock, 7-10 Day Leadtime, Priced Per Case
Allows the worker to set the airflow to the most comfortable level. Includes the valve and waist belt. It is strictly a regulator and will not warm or cool supplied air to the worker.

Dynabrade 90405 1/8" W x 24" L 60 Grit A/O DynaCut Belt, 50/pack
Dynabrade 82555 1/2" W x 18" L 60 Grit Ceramic DynaCut Belt, 50/pack
Dynabrade 79054 1/8" W x 24" L 80 Grit A/Z DynaCut Belt, 50/pack
Dynabrade 91429 1/2" W x 12" L 80 Grit A/O DynaCut Belt, 50/pack 
