The Wilkins 34-975XL3SE is a lead-free reduced pressure principle backflow preventer designed for compact potable water installations requiring protection against backsiphonage and backpressure contamination with 90° elbows included.

Key Specifications:

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

Other Related Variants:

• 112-975XL3: 1 1/2 Inches model size
• 114-975XL3: 1 1/4 Inches model size
• 12-975XL3: 1/2 Inches model size
• 1-975XL3: 1 Inches model size
• 2-975XL3: 2 Inches model size

Materials:

• Low Lead Cast Bronze body (ASTM B 584)
• Low Lead Cast Bronze access covers (ASTM B 584)
• Stainless Steel fasteners (300 Series)
• Stainless Steel springs (300 Series)
• Stainless Steel ball valve handles
• Silicone elastomers (FDA Approved)
• Buna Nitrile elastomers (FDA Approved)
• Noryl™ polymers

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 (305mm) and a maximum of 30 inches (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.

Standards Compliance:

ASSE Listed 1013; cUPC Listed; CSA Certified B64.4; UL Classified; C-UL Classified; AWWA Compliant C511; NSF/ANSI/CAN 61 & 372 compliant; Approved by Foundation for Cross Connection Control and Hydraulic Research at University of Southern California

Features & Benefits:

• Lead-Free Compliance: Meets NSF/ANSI/CAN 372 with less than 0.25% weighted average lead content for safe potable water applications.
• Dual Protection Design: Protects against both backsiphonage and backpressure contamination in potable water lines where potential health hazards exist.
• Easy Maintenance Access: First and second checks accessible through single cover without removing relief valve or entire device from line.
• Compact Installation Option: SE option includes 90° elbows for space-saving installations on potable water services.

FAQ

Q: What is the minimum working water pressure required for the Zurn 34-975XL3SE?

A: The minimum working water pressure for the Zurn 34-975XL3SE is 25 PSI to ensure proper operation of the reduced pressure principle assembly.

Q: Can this backflow preventer be installed outdoors?

A: Yes, the 34-975XL3SE can be installed outdoors within a protective enclosure. For indoor installations, an air gap adapter should be supplied.

Q: What size air gap adapter is needed for this model?

A: For the 3/4 inch 34-975XL3SE, the Model AG-8 air gap adapter is recommended for indoor installations.

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