The Wilkins 34-20XLDU is a lead-free water pressure reducing valve with integral strainer designed for potable water service lines where high inlet pressure must be reduced to a lower, safer outlet pressure.

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
• Connection Type: Double FNPT union

Other Related Variants:

• 1-20XLDU: 1 Inch model size

Materials:

• 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 and Buna nitrile

Typical Installation:

Install on potable water service lines downstream of the water meter and before the water heater, with sufficient side clearance for testing and maintenance. The Zurn 34-20XLDU may be installed in any position. Multiple installations are recommended for wide demand variations or where the desired pressure reduction is more than 4 to 1. Use with expansion tanks to prevent excessive system pressure caused by thermal expansion. Anytime the valve is adjusted, a pressure gauge must be used downstream to verify correct pressure setting.

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 strainer filters debris and sediment, 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 Control: Balanced stem design enables smooth and responsive reaction to changes in system flow demand while providing protection from inlet pressure changes.
• Easy Maintenance: Double union FNPT connections allow for maintenance and service without removing the device from the line or disturbing adjacent piping.

FAQ

Q: What is the factory preset pressure on the Wilkins 34-20XLDU?

A: The valve comes factory preset at 50 psi, with an adjustable reduced pressure range of 25 to 75 psi. Always use a pressure gauge downstream when adjusting to verify correct pressure setting.

Q: Can this valve be installed in any orientation?

A: Yes, the Model 20XL may be installed in any position. However, ensure sufficient side clearance is provided for testing and maintenance access.

Q: What is the maximum inlet pressure this valve can handle?

A: The Zurn 34-20XLDU has a maximum working water pressure rating of 300 psi and can reduce pressure ratios up to 4 to 1. For reductions greater than 4 to 1, multiple installations are recommended.

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