Description Manuals Videos Articles Clemco 20522 - Sentinel, Flange Adapter w/o Inspect Plate Sentinel Valve Item 28 Customers Also Viewed Sentinel, Flange Adapter w/ Inspect Plate #20513 $53.35 Sentinel Metering Plate, Urethane (Fine Abras… #21438 $79.54 Sentinel, Lower Body #20511 $66.93