ACQUITY H-Class QSM Performance Maintenance Kit Back Catalog number: CTS-11335 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-1598 Check Valve Assembly, Inlet Price on request CTS-10319 Sapphire Plunger Price on request CTS-A11133 Tube Assembly, Transducer to Check Valve Price on request