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The Wilkins 34-950XL3U is a 3/4" Reduced Pressure Principle Assembly designed to protect potable water systems against backsiphonage and backpressure contamination where a potential health hazard exists.

Key Specifications:

• Size: 3/4 Inches
• Maximum Working Pressure: 175 psi
• Maximum Working Temperature: 180°F
• Notable Certifications: ASSE 1013, cUPC, CSA B64.4
• End Connections: FNPT threaded

Other Related Variants:

• 1-950XL3U: 1 Inch version
• 2-950XL3U: 2 Inch version

Materials:

• Body: Low Lead Cast Bronze ASTM B584
• Fasteners: 300 Series Stainless Steel
• Elastomers: Silicone (FDA Approved)
• Elastomers: Buna Nitrile (FDA Approved)
• Springs: 300 Series Stainless Steel

Typical Installation:

Local codes shall govern installation requirements. To be installed in accordance with the manufacturers' instructions and the latest edition of the Uniform Plumbing Code. Unless otherwise specified, the assembly shall be mounted at a minimum of 12 inches and a maximum of 30 inches 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.

Standards Compliance:

ASSE 1013; cUPC; CSA B64.4; UL/C-UL Classified; AWWA C511; NSF/ANSI/CAN 61 & 372

Features & Benefits:

• Health Hazard Protection: Provides protection against both backsiphonage and backpressure of contaminated water into potable water supply systems.
• Lead-Free Construction: Meets NSF/ANSI/CAN 372 with less than 0.25% weighted average lead content, ideal for potable water applications.
• Union Ball Valve Design: The Zurn 34-950XL3U features union ball valves for easy installation and maintenance access without complete system removal.
• Durable Materials: Constructed with low lead cast bronze body, stainless steel fasteners and springs, and FDA-approved elastomers for long-lasting performance.

FAQ

Q: What is the minimum working pressure required for the Zurn 34-950XL3U?

A: The minimum working water pressure is 25 psi, with a maximum of 175 psi.

Q: Can this backflow preventer be installed vertically or horizontally?

A: The assembly must be installed 12 to 30 inches above adequate drains with sufficient side clearance for testing and maintenance, ensuring no part can be submerged.

Q: What pressure reducing valves are compatible with this assembly?

A: Suggested PRV pairings include the Wilkins Model 500XL3, 600XL3, and 625XL3 Pressure Reducing Valves for complete system integration.

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