Inlet Check Valve Back Catalog number: CTS-21145 Availability: In the manufacturer's stock Price on request - + Recommended CTS-10475 Sapphire Plunger Kit Price on request CTS-21586 1100 Series Essential Pack, G1310A/G1311A Pump Price on request CTS-10396 Washer Thermo/Dionex™ Model: P1000, P2000, P4000 Price on request