Check Valve, Secondary Inlet Back Catalog number: 11-1600 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-10475-1 Sapphire Plunger Price on request CTS-10548 Gold Plunger Seal, Analytical Heads Price on request CTS-11119-02 Head Plunger Seal, 2/pk Price on request