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OPTI-MAX® Outlet Check Valve, 1/8" Ceramic, SS Cartridge, Waters

Part Number:

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WAT025216, 700000253


515, 1515, 1525, 100 µL Head - M45/45G, M501, 510, 590, 600/600E, 610, 6K/6KA & 225 µL Head (#3) - 510, 590, 600/600E, 610, 650, 6K/6KA


Opti-Max® Cartridge Check Valves are designed to offer maximum performance and ease of use. From the sharp, consistent threads on OPTI-MAX® custom housings, to the exacting standards used to match ball/seat sets in OPTI-MAX® cartridges, every aspect of design and manufacturing reflects an unavoidable fact: when it comes to reliable check valve operation, quality and precision make a big difference. OPTI-MAX® check valves offer many advantages over OEM check valve systems, and are better designed, better made and more reliable than any other after-market check valve product. Additionally, OPTI-MAX® Free-Turn® housings can be removed with the tubing still attached, accelerating check valve maintenance while reducing fitting wear.

Key Features

  • Includes OPTI-MAX® check valve housing and cartridge
  • Most popular configuration
  • Ceramic recommended for acetonitrile applications
  • High mechanical strength stainless steel body
  • High-density ceramic ball & seat makes the valve more responsive and offers faster seating in lighter solvents
  • Ball and seat set is individually matched ensuring optimal performance
  • Features Free-Turn


510, 590, 600, 610 & 6K/6KA

Alliance 2690, 2695, 2790 & 2795

OPTI-MAX® Check Valve Overview

OPTI-MAX® Check Valves

Contact our Sales & Technical Support team Monday through Friday, 8:00 am to 4:30 pm (PST/PDT).

Submit an inquiry online.
United States 1 (800) 669-9015
International +1 (503) 557-9994

Cartridge Check Valve