Description Manuals Videos Articles Clemco 20600 - Spring, Sentinel and Auto Quantum Valve AQV This is an OEM replacement Spring for Auto Quantum Valve AQV and Sentinel Metering Valves AQV Item # 11 Sentinel Media Valve Item # 6 Customers Also Viewed Clemco Sentinel Valve for coarse grit media #20608 $883.22 Clemco Sentinel Metering Valve for fine grit … #21439 $916.11 Clemco Spring, Compression, 5/8 inch x 1-11/1… #01982 $12.53