Description Manuals Videos Articles Clemco 21329 - Auto Quantum Valve AQV Piston, rubber, w/ bushing This is an OEM replacement Piston with a rubber piston cup and bushing for Auto Quantum Valve. This replaces the discontinued Aluminum Piston. AQV Item # 3 Manual Related Parts (1) Parts Included (1) Clemco Auto Quantum Grit Metering Valve #24447 $756.38 156 Customers Also Viewed Auto Quantum Valve Piston stop #21323 $40.87 Auto Quantum Valve Body #21349 $407.79 Clemco Auto Quantum Grit Metering Valve #24447 $756.38