#45270 Vacuum Relief Valve with 3/4" thread, used on many portable vacuum pumps.
Solid Brass

947240 Servo Regulator for up to 2HP pumps and up to 14CFM (ASME)

947241 Large Servo Regulator for up to 5HP pumps and up to 120CFM (ASME)

  Sentinel MK II Controller  560kb
         (Installation and maintenance manual)

The Mark II Sentinel Vacuum Controller has ABS plastic housings and features direct sensing which is sensitive to .1 hg of change. May be adjusted between 10” and 15”. It has a top dome filter, a main filter, and is 6” in diameter and 111/4” high. For maximum 150 CFM ASME. 2” female NPT. Wt. 11/4 lbs.

62520 Model 100 Sentinel Vacuum Controller features direct sensing and is sensitive to 0.1 hg of change. May be adjusted between 10” and 15”. Female NPT mounting connections. 5” in diameter and 12” high. Model 100 Controller for maximum 150 CFM ASME. 1.5” female NPT. Wt. 4 lbs.

The Model 350 Sentinel Vacuum Controller features direct sensing and is sensitive to 0.1” hg of change. It may be adjusted between 10” and 15” hg. 3" female NPT mounting connections. These large capacity controllers are 7” in diameter and 12.5” in height. Model 350 Controller for maximum 350 CFM ASME. Wt. 10 lbs.

The Peacekeeper for the Sentinel vacuum controller is a combination noise suppressor and air filter providing a large washable filter and effective reduction of the noise created by air flow into the controller. Tests show that the Peacekeeper can cut 10 to 15 decibels off existing noise level. Replacement foam filter sold separately.