BACKFLOW PREVENTER, Zurn Wilkins 375AST NRS Reduced Pressure Principle Assembly

APPLICATION

Designed for installation on potable water lines to protect against both backsiphonage and backpressure of contaminated water into the potable water supply. The Model 375AST NRS provides protection where a potential health hazard exists.  Ideal for use where lead-free* valves are required.  

MANUFACTURER

Zurn Wilkens

MATERIALS 

• Main Valve Body 304L Stainless steel
• Access covers 304L Stainless steel
• Coatings FDA App'd electrostatic epoxy finish
• Internals Stainless steel, 300 Series NORYL™
• Fasteners & Springs Stainless Steel, 300 Series
• Seal rings EPDM (FDA approved)
• O-rings Buna Nitrile (FDA approved)
• Sensing line Stainless Steel, braided hose

CONNECTIONS

Flange + Flange, Flanged Bolt Pattern per ASME B16.42 Class 150

STANDARDS COMPLIANCE

• ASSE® Listed 1013
• AWWA Compliant C511 (with gates only), and C550
• FM® Approved
• UL® Classified
• C-UL® Classified
• CSA® Certified B64.4
• cUPC® Listed
• Approved by the Foundation for Cross Connection Control
• and Hydraulic Research at the University of Southern California
  
• Meets the requirements of NSF/ANSI/CAN 61*
• *(0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT)

MAX WORKING PRESSURE

• 175 psi

MAX WORKING WATER TEMPERATURE

• 140° F

HYDROSTATIC TEST PRESSURE 

• 350 psi