Wilkins 450STDAR Double Check Detector Assembly, 4" to 10", Lead-Free*

Wilkins 450STDAR Double Check Detector Assembly, 4" to 10", Lead-Free*

The Double Check Detector Backflow Prevention Assembly shall be certified to NSF/ANSI 61, ASSE® Listed 1048, and sup- plied with full port gate valves. The main body, spool, and access cover shall be 304L Stainless Steel, the seat ring and check valve shall be Noryl™ (NSF Listed), the stem shall be stainless steel (ASTM A 276) and the seat disc elastomers shall be EPDM. The first and second check valves shall be accessible for maintenance without removing the device from the line. The Double Check Detector Backflow Prevention Assembly shall be a WILKINS Model 450STDAR
Compliance:
(Vertical Up - Vertical Down Orientation only)
• Approved by the Foundation for Cross Connection Control
and Hydraulic Research at the University of Southern California
• ASSE® Listed 1048
• CSA® Certified B64.5
• AWWA Compliant C510 (with gates only), and C550
• UL® Classified
• C-UL® Classified
• FM® Approved
• Meets the requirements of NSF/ANSI/CAN 61*
*(0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT)
Features:

Superior stainless steel body resists corrosion and extends the life of the product
Ideal for new or 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
Patented AR spool for drop-in replacements, matching lay-lengths of common n-pattern valves
AR spool maintains agency approvals when installed by the factory
Metered by-pass detects leaks and other water use; can be situated on either side of product for ease of installation
Available in sizes 4 in. through 10 in.

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Technical specification

Unique ref.zurn-450stdar
Product familyBackflow Preventers
Product groupDouble Check Detector Assembly
TypeObject (single object)
Date of publishing2025-09-02
Edition number1

Links

Product urlhttps://www.zurn.com/products/water-control/backflow-preventers/450stdar
Installation instructionshttps://files.zurn.com/care-cleaning-install-warranty-sheets/is450st.pdf
Product certificationhttp://www.zurn.com/products/water-safety/backflow-prevention/450stdar#Features
Technical descriptionhttps://files.zurn.com/spec-sheets/bf-450stdar.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