Description Manuals Videos Articles Clemco 19509 - Screw, 5/16 x 1-1/4 hex head Sentinel Valve Item 16 Customers Also Viewed Sentinel, Flange Adapter w/ Inspect Plate #20513 $65.28 Sentinel, Lower Body #20511 $85.75 Screw, 1/2 inch x 2 1/2 inch hex head #03457 $2.87