Check Valve Assembly, Outlet Back Catalog number: 11-1599 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21586 1100 Series Essential Pack, G1310A/G1311A Pump Price on request CTS-11294 1515 Performance Maintenance Kit Price on request CTS-11315 Needle Seal, PEEK™ SIL-20 Price on request