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The Wilkins 1-70XLDU is a lead-free water pressure reducing valve designed for potable water lines, featuring double union FNPT connections and a balanced piston design for superior pressure control.

Key Specifications:

• Size: 1 Inches
• Maximum Working Pressure: 300 psi
• Maximum Working Temperature: 140°F
• Notable Certifications: ASSE 1003, IAPMO, CSA
• Connection Type: Double Union FNPT

Other Related Variants:

• 34-70XLDU: 3/4 Inch version

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. 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 Zurn 1-70XLDU 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 ratio. A pressure gauge must be used downstream to verify correct pressure setting.

Standards Compliance:

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

Features & Benefits:

• Lead-Free Compliance: Meets NSF/ANSI/CAN 372 with less than 0.25% weighted average lead content for safe potable water applications.
• Balanced Piston Design: Provides smooth and responsive reaction to system flow demand changes while protecting against inlet pressure variations.
• Replaceable Cartridge System: Unitized cartridge design reduces cleaning and maintenance time, simplifying service procedures.
• Thermal Expansion Protection: Direct acting integral bypass design prevents buildup of excessive system pressure caused by thermal expansion.

FAQ

Q: Can the Zurn 1-70XLDU be installed in any orientation?

A: Yes, the Model 70XL may be installed in any position. If installed in a pit, vault, or indoors, specify the "SC" sealed cage option for added protection.

Q: What pressure reduction ratio is recommended for the 1-70XLDU?

A: Multiple installations are recommended where the desired pressure reduction exceeds a 4:1 ratio (for example, reducing 200 psi inlet to 50 psi outlet).

Q: How do I adjust the outlet pressure on the Wilkins 1-70XLDU?

A: Always use a downstream pressure gauge to verify correct pressure setting when adjusting. Do not bottom the adjustment bolt on the bell housing during adjustment.

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