Wilkins 475STDAV Reduced Pressure Detector Assembly, 4" to 10", Lead-Free*

Wilkins 475STDAV Reduced Pressure Detector Assembly, 4" to 10", Lead-Free*

The Reduced Pressure Detector Backflow Prevention Assembly shall be certified to NSF/ANSI/CAN 61, ASSE® Listed 1047, and supplied with full port OS & Y 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 Detector Backflow Prevention Assembly shall be a WILKINS Model 475STDA.
Compliance:

Massachusetts MA approved
Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California (VUVD and VUVU orientations)
ASSE® Listed 1047
AWWA Compliant C550
CSA® Certified B64.4
UL® Classified
C-UL® Classified
FM® Approved
Meets the requirements of NSF/ANSI/CAN 61*

*(0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT)
Features:

Only approved means of installing Reduced Principle Pressure Backflow Preventer in a vertical configuration
Superior stainless steel body to resist corrosion and extend the product life
Smaller footprint for direct drop-in replacement
Time-tested check and relief valve components ensure easy maintenance and more water system uptime
Patented compound checks provide ultra-low pressure drop as documented by approval authorities, reducing the need for a booster pump
Available in sizes 4"-10"

Technical specification

Unique ref.zurn-475stdav
Product familyBackflow Preventers
Product groupReduced Pressure Principle Assembly
TypeObject (single object)
Date of publishing2025-09-02
Edition number1

Links

Product urlhttps://www.zurn.com/products/water-control/backflow-preventers/475stdav
Installation instructionshttps://files.zurn.com/care-cleaning-install-warranty-sheets/is475st.pdf
Product certificationhttp://www.zurn.com/products/water-safety/backflow-prevention/475stdav#Features
Technical descriptionhttps://files.zurn.com/spec-sheets/bf-475stda.pdf

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