The Wilkins 34-70XLC is a lead-free water pressure reducing valve designed for potable water lines, featuring a balanced piston design and replaceable cartridge.

Key Specifications:

• Size: 3/4 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:

• 1-70XLC: 1 Inch model size

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. Anytime a reducing valve is adjusted, 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 61 & 372 with less than 0.25% weighted average lead content for safe potable water applications.
• Replaceable Cartridge Design: Unitized cartridge reduces maintenance time and simplifies cleaning procedures.
• Balanced Piston Technology: Provides smooth, responsive reaction to flow demand changes while protecting against inlet pressure variations.
• Integral Bypass Protection: Direct acting bypass design prevents excessive system pressure buildup caused by thermal expansion.

FAQ

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

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

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

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

Q: How do I adjust the outlet pressure on the Wilkins 34-70XLC?

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

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