The Wilkins 34-70XLDUC is a water pressure reducing valve designed for potable water lines requiring lead-free compliance, featuring a balanced piston design and unitized replaceable cartridge for efficient maintenance and smooth pressure regulation.

Key Specifications:

• Size: 3/4 Inches
• Maximum Working Pressure: 300 psi
• Maximum Working Temperature: 140°F
• Notable Certifications: ASSE 1003, IAPMO, CSA, NSF 61/372
• Connection Type: Double Union FNPT and FC

Other Related Variants:

• 1-70XLDUC: 1 Inch model size

Materials:

• Body and Bell: Cast Bronze ASTM B 584
• Seat: Stainless Steel, 300 Series
• Stem & Sleeve: Stainless Steel, 300 Series
• Elastomers: Buna Nitrile, FDA (CFR) 21, 177.2600
• Elastomers: EPDM, FDA (CFR) 21, 177.2600
• Strainer Screen: Stainless Steel, 300 Series

Typical Installation:

Local codes shall govern installation requirements. Unless otherwise specified, the assembly shall be mounted in accordance with the manufacturer's instructions and the latest edition of the Uniform Plumbing Code. The assembly shall be installed with sufficient side clearance for testing and maintenance. The Model 70XL may be installed in any position. If installed in a pit, vault or indoors, specify the "SC" sealed cage option. Multiple installations are recommended for wide demand variations or where the desired pressure reduction is more than 4 to 1 (i.e.: 200 psi inlet reduced to 50 psi outlet). CAUTION: Anytime a reducing valve is adjusted, a pressure gauge must be used downstream to verify correct pressure setting. Do not bottom adjustment bolt on bell housing.

Standards Compliance:

ASSE 1003 Listed; IAPMO Listed; CSA Certified; City of Los Angeles Approved; NSF/ANSI/CAN 61 & 372

Features & Benefits:

• Balanced Piston Design: Enables smooth and responsive reaction to changes in system flow demand while providing protection from inlet pressure variations.
• Unitized Replaceable Cartridge: Reduces time involved with cleaning and maintenance, all internal corrosion-resistant parts included in a single replaceable cartridge.
• Integral Bypass Design: Direct acting integral bypass prevents buildup of excessive system pressure caused by thermal expansion in both flow and no-flow conditions.
• Lead-Free Compliance: Meets NSF/ANSI/CAN 61 & 372 requirements with less than 0.25% weighted average lead content, ideal for potable water applications.

FAQ

Q: Can the Zurn 34-70XLDUC be installed in any orientation?

A: Yes, the Zurn 34-70XLDUC may be installed in any position. If installed in a pit, vault, or indoors, specify the "SC" sealed cage option for optimal protection.

Q: What pressure range does the Wilkins 34-70XLDUC regulate?

A: The valve provides a reduced pressure range of 25 psi to 75 psi and comes factory preset to 50 psi. Adjustment is made using a downstream pressure gauge to verify correct pressure setting.

Q: What is the maximum pressure reduction ratio recommended for this valve?

A: Multiple installations are recommended for wide demand variations or where the desired pressure reduction exceeds a 4 to 1 ratio (example: 200 psi inlet reduced to 50 psi outlet).

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