Description Manuals Videos Articles Clemco Part # 22761 is the Housing for the Manual Quantum Valve (MQV) knob. Manual Related Parts (1) Parts Included (1) Clemco Manual Quantum Valve, MQV #22845 $426.58 462 Customers Also Viewed Clemco Manual Quantum Valve, MQV #22845 $426.58 MQV Metering Plate & Shaft #22763 $95.49 MQV Nut, knob housing #22762 $49.45