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Sioux Chief 869 series ProCheck backwater valves shall be used where necessary in drainage systems. Backwater valve shall be installed in horizontal drainage lines to reduce or prevent damage to dwelling from sewage backup. Backwater valve shall have a stepped design to provide adequate fall through the valve body and encourage flow. Flapper shall install into valve body via removable carrier, which utilizes key-to-slot to ensure proper alignment. Flapper shall have a permanent, one-piece sealing surface, and allow unrestricted, unidirectional flow. Valve body shall be sealed by an impact/solvent resistant lid with o-ring. Backwater valve shall be adaptable to either shallow or deep-bury installations and be designed in accordance with ASME A112.14.1-2003

  • Available for 3" or 4" Sch. 40 DWV lines.
  • Valves can be adapted for standard, shallow-depth or deep-bury installations
  • Modular valve design allows for interchangeable accessories - less inventory
  • Structurally rugged and molded from engineered resins to stand up to job site abuse
  • The unique flapper creates a tighter seal than other backwater valves
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