Standard Abrasives 840032, Quick Change Surface Conditioning FE Disc, A/O Medium, TSM, Maroon, 3/4 in, QS75KM, 7000046846, 50/case 
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.
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.
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3M 60339, Nose Cup Valve Assembly 7882, Replacement Part, 7000125976, 20 EA/Case
$134.01