Description Large capacity vacuum regulator The Model 500 Sentinel Vacuum Controller is appropriate for installations where airflow does not exceed 500 CFM ASME Direct sensing that is sensitive to 0.1" hg of change in vacuum pressure May be adjusted between 10" and 15". 3" Female NPT mounting connections. 7" in diameter 12.5" high. weighs 10 lbs. Made In USA 17898 M500 Overnight shipping available. - call before noon for next day air 7/23
