Description Manuals Videos Articles Popular Accessories Clemco Part # 21314 is the Upper Body Flange for the Manual Quantum Valve (MQV) & Auto Quantum Valve. Manual Related Parts (2) Parts Included (2) Clemco Auto Quantum Grit Metering Valve #24447 $892.62 156 Clemco Manual Quantum Valve, MQV #22845 $385.24 462 Customers Also Viewed Valve insert, CAT #08963 $28.71 MQV Adjustment Knob #22766 $58.53 Clemco Blast Hose, 4-Ply, 1 inch ID x 50 ft #23448 $331.72