Needs ASI Inlet housing 250-1910. This is Direct replacement. If you have not used ASI check valves in the past, then we recommend that you purchase the complete assembly. For better performance, we recommend that you use ASI check valves for both inlet and outlet.
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Inlet Cartridge, Waters Extended Flow 225 µL Head #3 M510 EF, 590 EF, 6000 EF, 6000A EF, LCM1, M600 EF, 600 E EF, 610 EF, 650 EF