Description Manuals Videos Articles Clemco 03080 - Screw, 1/4 x 1/2 set, square head FSV Item # 12 Sentinel Valve Item 23 Customers Also Viewed Service Kit, MQV Metering Segment #22854 $30.28 Screw, Hex Hed, Cap, 1/2 -NC x 1-3/4 inch #03455 $4.59 Screw, Socket Head, 5/16-NC x 1-3/4 inch #21321 $15.66