Check Valve Assembly, Outlet Back Catalog number: 11-1599 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-1602 Seal, Polyethylene, High Pressure, Piston Price on request 11-4121 Ceramic Plunger Holder Assembly, LC-10ADvp Price on request CTS-8068 Quartz Lens Price on request