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The Wilkins 1-70XLC is a lead-free water pressure reducing valve designed for potable water systems, featuring a unitized replaceable cartridge and balanced piston design for reliable pressure control.

Key Specifications:

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

Other Related Variants:

• 34-70XLC: 3/4 Inches version

Materials:

• Body and bell: Cast bronze ASTM B 584
• Seat: Stainless Steel, 300 series
• Stem and 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).

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 61 & 372 standards with less than 0.25% weighted average lead content, ideal for potable water applications.
• Replaceable Cartridge Design: Unitized cartridge reduces maintenance time and simplifies cleaning procedures for long-term reliability.
• Thermal Expansion Protection: Direct acting integral bypass design prevents excessive system pressure buildup caused by thermal expansion.
• Balanced Piston Performance: Smooth and responsive reaction to flow demand changes while providing protection from inlet pressure variations.

FAQ

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

A: Yes, the Zurn 1-70XLC may be installed in any position. However, if installed in a pit, vault, or indoors, specify the "SC" sealed cage option for proper protection.

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

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

Q: How do I adjust the outlet pressure on this valve?

A: Always use a downstream pressure gauge to verify correct pressure settings when adjusting. The valve is factory preset to 50 psi and adjustable from 25 to 75 psi. Do not bottom the adjustment bolt on the bell housing.

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