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Wilkins 475ST Reduced Pressure Principle Assembly
Wilkins 475ST Reduced Pressure Principle Assembly
Wilkins 475ST Reduced Pressure Principle Assembly
    Wilkins

    Wilkins 475ST Reduced Pressure Principle Assembly

    The Reduced Pressure Principle Backflow Prevention Assembly shall be certified to NSF/ANSI 61, ASSE® Listed 1013, and supplied with full port gate valves. The main body and access cover shall be 304L Stainless Steel, the seat ring and check valve shall be NORYL™, the stem shall be stainless steel (ASTM A 276) and the seat disc elastomers shall be EPDM. The checks and the relief valve shall be accessible for maintenance without removing the device from the line. The Reduced Pressure Principle Backflow Prevention Assembly shall be a ZURN WILKINS Model 475ST

    Compliance:

    • MassachusettsMAapproved
    • NSFStandard61
    • NSFStandard372
    • ASSEStandards
    • AWWA Compliant C511 (with gates only), and C550
    • CSA B64.4
    • UL listed
    • ProductUSCApproval Confirmed
    • FMApproved
    • Meets the requirements of NSF/ANSI/CAN 61*
      *(0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT)

    Keywords: Reduced Pressure Principle Assembly, Reduced Pressure Detector Assembly, Zurn Pressusre Reducing Vlaves, Zurn Reduced Pressure Principle Assembly, Reduced Pressure Principle Backflow Assembly,4-475ST,6-475ST,8-475ST

    *Product contains weighted average lead content less than 0.25% for wetted surfaces.

    Specification
    • Designed for drop in replacement of competitor valves and new installation on potable water lines to pro¬tect against both backsiphonage and backpressure of contaminated water into the potable water supply. Assembly shall provide protection where a potential health hazard exists. The Model 475ST is approved for applications requiring flow vertical up and vertical down (standard) or flow vertical up and vertical up (V option). Ideal for use where lead-free valves are required.

    Technical specification
    • Unique ref.zurn-475st
    • Product familyBackflow Preventers
    • Product groupReduced Pressure Principle Assembly
    • TypeObject (single object)
    • Date of publishing2025-09-02
    • Edition number1
    Related
    • Material mainStainless steel
    • Material secondaryStainless steel
    • Designed inUnited States
    Classification
    • BIMobject CategoryPlumbing - Valves

    Region availability

    North America
    Anguilla
    Antigua and Barbuda
    Aruba
    Barbados
    Belize
    Bermuda
    British Virgin Islands
    Canada
    Caribbean Netherlands
    Cayman Islands
    Collectivity of Saint Martin
    Costa Rica
    Cuba
    Curaçao
    Dominica
    Dominican Republic
    El Salvador
    Greenland
    Grenada
    Guadeloupe
    Guatemala
    Haiti
    Honduras
    Jamaica
    Martinique
    Mexico
    Montserrat
    Nicaragua
    Panama
    Puerto Rico
    Saint Kitts and Nevis
    Saint Lucia
    Saint Pierre and Miquelon
    Saint Vincent and the Grenadines
    Saint-Barthélemy
    Sint Maarten
    The Bahamas
    Trinidad and Tobago
    Turks and Caicos Islands
    U.S. Virgin Islands
    United States
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