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The Wilkins 34-ZW1017XL is an Aqua-Gard® tempering mixing valve designed to mix hot and cold water at the source, delivering safe tempered water at 122°F or less for residential and light commercial applications.

Key Specifications:

• Size: 3/4 Inches
• Maximum Working Pressure: 145 psi
• Outlet Temperature Range: 95–131°F (35–55°C)
• Notable Certifications: ASSE 1017, cUPC, CSA B125.3
• End Connections: FNPT Threaded

Other Related Variants:

• 34-ZW1017XLC: 3/4 Inches copper sweat connection version
• 34-ZW1017XLPEX: 3/4 Inches PEX barb connection version
• 12-ZW1017XL: 1/2 Inches FNPT version
• 12-ZW1017XLC: 1/2 Inches copper sweat version
• 34-ZW1017XLCPVC: 3/4 Inches CPVC connection version
• 34-ZW1017XLPEXF1960: 3/4 Inches PEX barb F1960 version
• 34-ZW1017XLM: 3/4 Inches MNPT version
• 1-ZW1017XLC: 1 Inch copper sweat version

Materials:

• Body: Low Lead Cast Bronze, ASTM B 584
• Internal Brass: Low Lead Brass, ASTM B 927, UNS C27450
• Piston: Polysulfone
• Guide Tube & Checks: Noryl GFN2
• Spring & Screen: 300 Series Stainless Steel
• Seals: Nitrile Elastomer

Typical Installation:

The Zurn 34-ZW1017XL is installed at the domestic water heater outlet where it mixes hot and cold water to deliver tempered water throughout the distribution system. It works in conjunction with a T&P relief valve at the water heater and provides safe water temperature to hot water appliances and fixtures. Installation with a shut-off valve and thermometer in the tempered water line is recommended for accurate temperature monitoring and should be used with an ASSE 1070 point-of-use device.

Standards Compliance:

ASSE Listed 1017; cUPC Listed; CSA Certified B125.3; Meets the requirements of NSF/ANSI/CAN 61-9 (0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT)

Features & Benefits:

• Superior Temperature Accuracy: Maintains ±4°F accuracy with minimum 0.5 gpm flow and 20°F minimum hot-to-outlet differential, ensuring safe water temperatures from minimum to maximum flow rates.
• Lead-Free Construction: Ideal for applications where lead-free valves are required, meeting NSF/ANSI/CAN 61-9 standards with 0.25% maximum weighted average lead content.
• Multiple End Configurations: Available in FNPT, copper sweat, PEX barb, CPVC, and MNPT connections, making installation suitable for all residential and most light commercial applications.
• High Flow Capacity: Delivers up to 18 gpm at 45 psi pressure loss with maximum working pressure of 145 psi for reliable performance in demanding applications.

FAQ

Q: What is the difference between the Wilkins 34-ZW1017XL and point-of-use mixing valves?

A: The Wilkins 34-ZW1017XL is designed for installation at the hot water source (water heater) to temper water throughout the distribution system. Point-of-use devices (ASSE 1070) should still be installed at individual fixtures where end users could access the temperature control. The ZW1017XL should never be installed where end users can change its setting.

Q: What are the minimum temperature requirements for proper operation?

A: The valve requires a minimum 20°F approach temperature between the hot supply and outlet setting. Hot supply temperature should be 120–195°F maximum, and cold supply temperature should be 40–75°F. This differential ensures accurate mixing and safe tempered water delivery.

Q: Can I install the Zurn 34-ZW1017XL with different hot and cold inlet pressures?

A: The maximum pressure differential between hot and cold inlets is 15 psi. For optimal performance and temperature accuracy, inlet pressures should be as balanced as possible. If pressure differential exceeds this specification, pressure balancing devices may be required.

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