LC-30AD Plunger Holder Assembly, UHP2 (w/Diaphragm Back Catalog number: 11-4073 Manufacturer: SCIENCIX Availability: In the manufacturer's stock Price on request - + Recommended 11-1603 Seal, Wash Price on request CTS-10600 Check Valve Cartridge, 2/pk Price on request CTS-5669 Oil Seal Price on request