The Wilkins 34-20XLDUC is a water pressure reducing valve with integral strainer designed for potable water service lines, reducing high inlet pressure to a lower outlet pressure while screening debris and sediment.

Key Specifications:

• Size: 3/4 Inches
• Maximum Working Water Pressure: 300 psi
• Maximum Working Water Temperature: 140°F
• Notable Certifications: ASSE 1003, cUPC, CSA B356
• End Connections: Double female copper sweat

Other Related Variants:

• 1-20XLDUC: 1 Inch model size

Materials:

• Main Valve Body: Lead-Free cast bronze
• Bell Housing: UV-resistant polymer composite
• Stem: Lead-Free brass
• Cartridge: Acetal
• Spring: 300 series stainless steel
• Strainer Screen: 300 series stainless steel
• Elastomers: EPDM, Buna nitrile

Typical Installation:

Local codes shall govern installation requirements. Unless otherwise specified, the assembly shall be mounted in accordance with the latest edition of the Uniform Plumbing Code. The Model 20XL may be installed in any position. The assembly shall be installed with sufficient side clearance for testing and maintenance. Multiple installations are recommended for wide demand variations or where the desired pressure reduction is more than 4 to 1. Install on potable water service lines downstream of water meter and upstream of water heater, with appropriate shut-off valves, backflow preventers, strainers, expansion tanks, and other plumbing components as required.

Standards Compliance:

ASSE Listed 1003; cUPC Listed; CSA Certified B356; NSF/ANSI/CAN 61; NSF/ANSI/CAN 372 (Lead-Free)

Features & Benefits:

• Integral Strainer: Built-in 300 series stainless steel screen filters sediment and debris, making it ideal for residential and water systems requiring frequent cleaning.
• Thermal Expansion Protection: Direct acting integral by-pass design prevents buildup of excessive system pressure caused by thermal expansion.
• Smooth Pressure Regulation: Balanced stem design enables responsive reaction to changes in system flow demand while providing protection from inlet pressure changes.
• Easy Installation & Maintenance: Double female copper sweat union connections allow easy integration into copper piping systems and simplify service; accessible for maintenance without removing the device from the line.

FAQ

Q: Can the Zurn 34-20XLDUC be installed in any orientation?

A: Yes, the Model 20XL may be installed in any position with sufficient side clearance for testing and maintenance.

Q: What is the factory preset pressure for the Wilkins 34-20XLDUC?

A: The valve comes factory preset at 50 psi, with an adjustable reduced pressure range of 25 to 75 psi. A pressure gauge must be used downstream when adjusting.

Q: Is the Zurn 34-20XLDUC lead-free compliant?

A: Yes, it meets NSF/ANSI/CAN 372 lead-free requirements with a maximum 0.25% weighted average lead content in wetted components.

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