Zurn Wilkins 8-375ASTOSY 8" RPZ Backflow Preventer | Stainless Steel OS&Y

Zurn Wilkins 8-375ASTOSY 8" RPZ Backflow Preventer | Stainless Steel OS&Y.

Product Overview:

The Zurn Wilkins 8-375ASTOSY Reduced Pressure Principle Assembly (RPZ) is a premium backflow preventer designed to safeguard potable water systems from contamination due to backsiphonage or backpressure. Built with a robust 304L stainless steel body and OS&Y gate valves, this 8" model ensures durable, lead-free performance in critical applications. It’s ideal for commercial and industrial settings where reliability and safety are paramount.

Features & Benefits:

• Compact Design: Short lay length enables space-saving installation in tight areas.

• High-Performance Flow: Engineered for improved flow rates, perfect for low-pressure environments.

• Corrosion Resistant: Stainless steel body resists corrosion, extending product life.

• Tool-Free Maintenance: Check valves and relief valve accessible without removing from line.

• Lead-Free Certified: Complies with NSF/ANSI 372 standards for potable water systems.

• Versatile Installation: Horizontal or vertical orientation supported with OS&Y gate valves.

• Retrofit Friendly: Compatible with Model 300ASTR for easy upgrades or replacements.

Specifications:

• Size: 8”

• Body & Cover Material: 304L Stainless Steel

• Internal Components: Stainless steel, NORYL™ plastic

• Seals: EPDM, FDA approved

• O-Rings: Buna N (FDA approved)

• Working Pressure: 175 PSI

• Temperature Range: Up to 140°F

• Test Pressure: 350 PSI

• End Connections: Grooved (AWWA C606) and Flanged (ANSI B16.1 Class 125)

• Certifications: ASSE® 1013, AWWA C511/C550, FM®, UL®, CSA®, NSF®, IAPMO®

Installation Tips:

• Install between 12"–30" above the ground to ensure accessibility and drainage.

• Maintain sufficient side clearance for easy testing and maintenance.

• Ensure no part of the assembly is submerged to meet safety standards.

• Use grooved or flanged connections based on your piping system.

• Follow all local code requirements during installation.

FAQs:

Q: Is this assembly lead-free?
A: Yes, it's certified to NSF/ANSI 372 standards with ≤0.25% weighted average lead content.

Q: Can it be installed vertically?
A: Yes, this model supports both horizontal and vertical installations.

Q: What materials are used inside the valve?
A: It includes stainless steel and NORYL™ internals with FDA-approved EPDM and Buna N seals.

Q: Do I need special tools to maintain it?
A: No, the checks and relief valve can be accessed without removing the unit from the pipeline.

Q: What’s the max pressure and temperature rating?
A: It supports up to 175 PSI and temperatures as high as 140°F.