Zurn Wilkins 4-375A 4" Reduced Pressure Principle Assembly (RP) Non-Rising Stem Lead-Free

Zurn Wilkins 4-375A 4" Reduced Pressure Principle Assembly (RP) Backflow Preventer Non-Rising Stem Lead-Free Engineering Specification: The Reduced Pressure Principle Backflow Prevention Assembly shall be certified to NSF/ANSI 372, ASSE® Listed 1013, and supplied with full port, non-rising stem gate valves. The main body and access cover shall be epoxy coated ductile iron (ASTM A 536 Grade 4), 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 375A.

Features & Benefits:

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 375A provides protection where a potential health hazard exists. Ideal for use where Lead-Free* valves are required.

Standards Compliance (Horizontal & Vertical):

• ASSE® Listed 1013
• AWWA Compliant C511 (with gates only), and C550
• IAPMO® Listed
• Certified to NSF/ANSI 372* by IAPMO R&T
• CSA® Certified
• UL® Classified
• C-UL® Classified
• FM® Approved
• Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California.
• NYC MEA 484-04-M
• NSF® Listed-Standard 61, Annex G* *(0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT)

Materials:

• Main Valve Body: Ductile Iron ASTM A 536 Grade 4
• Access Covers: Ductile Iron ASTM A 536 Grade 4
• Coatings: FDA Approved Electrostatic Epoxy Finish
• Internals Stainless Steel, 300 Series NORYL™, NSF Listed
• Fasteners & Springs: Stainless Steel, 300 Series
• Seal Rings: EPDM (FDA approved)
• O-rings: Buna Nitrile (FDA approved)
• Sensing Line: Stainless Steel, Braided Hose

Features:

• Sizes:  2 1/2"*, 3"*, 4", 6", 8", 10"
• Maximum Working Water Pressure: 175 PSI
• Maximum Working Water Temperature: 140°F
• Hydrostatic Test Pressure: 350 PSI
• End connections
• (Grooved for steel pipe) AWWA C606
• (Flanged) ANSI B16.1 Class 125

NOTE: 2 1/2 & 3" sizes use 4" body & reducer couplings.

Typical installation:

Local codes shall govern installation requirements. Unless otherwise specified, the assembly shall be mounted at a minimum of 12" (305mm) and a maximum of 30" (762mm) above adequate drains with sufficient side clearance for testing and maintenance. The installation shall be made so that no part of the unit can be submerged.

Technical Documentation:

Zurn Wilkins 4-375A 4" Reduced Pressure Principle Assembly (RP) Non-Rising Stem Lead-Free Specification Submittal: Click Here.

Zurn Wilkins 4-375A 4" Reduced Pressure Principle Assembly (RP) Non-Rising Stem Lead-Free Installation and Maintenance Instructions: Click Here.

Zurn Wilkins 4-375A 4" Reduced Pressure Principle Assembly (RP) Non-Rising Stem Lead-Free Repair Parts: Click Here.

Zurn Wilkins 4-375A 4" Reduced Pressure Principle Assembly (RP) Non-Rising Stem Lead-Free CAD Installation Drawing: Click Here.

Zurn Wilkins 4-375A 4" Reduced Pressure Principle Assembly (RP) Non-Rising Stem Lead-Free BIM / 3D Models and 2D DXF Drawings: Click Here.

Zurn Wilkins 4-375A 4" Reduced Pressure Principle Assembly (RP) Non-Rising Stem Lead-Free Relief Valve Discharge Rates: Click Here.

Zurn Wilkins 4-375A 4" Reduced Pressure Principle Assembly (RP) Non-Rising Stem Lead-Free Waterworks Brochure: Click Here.

Zurn Wilkins 4-375A 4" Repair Video:

Zurn Wilkins Troubleshooting Reduced Pressure Principle Relief Valve Discharge Video:

Zurn Wilkins, Why Does Zurn Wilkins Call it a Compound Check Video:

Zurn Wilkins Compound Check Removal Video:

Cross Reference:

Zurn Wilkins 4-375A 4" Reduced Pressure Principle Assembly (RP) Non-Rising Stem Lead-Free Crosses:

• Watts 009, 994, 995, 957
• Conbraco 4D-200, RP4A
• Febco 860, 867
• Ames 4001SS, 400 Maxim 400 Colt