Inlet Check Valve Back Catalog number: CTS-21147 Availability: In the manufacturer's stock Price on request - + Recommended CTS-21240 ACQUITY I-Class SM-FTN Performance Maint. Kit,2890 Price on request 11-3832 Wash Seal, PE, 1220, 1260, 1290 Price on request CTS-11425 Sapphire Plunger Price on request