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The Wilkins 34-VR10XL is a 3/4-inch vacuum relief valve engineered to protect water systems from internal vacuum conditions, preventing siphonage and system damage.

Key Specifications:

• Size: 3/4 Inches
• Maximum Working Pressure: 225 PSI
• Maximum Working Temperature: 250°F
• Notable Certifications: NSF/ANSI 372, CSA
• End Connections: Threaded ANSI B1.20.1

Other Related Variants:

• 12-VR10XL: 1/2 Inch version

Materials:

• Low Lead Brass valve body and internals meeting ASTM B371 standards
• Buna Nitrile elastomers compliant with FDA 21 CFR 177.2600
• Silicone elastomers compliant with FDA 21 CFR 177.2600
• 300 series stainless steel spring

Typical Installation:

The Zurn 34-VR10XL is designed for installation on commercial and residential hot water storage tanks and pressure vessels. It is typically installed in conjunction with thermal expansion tanks, T&P relief valves, and pressure reducing valves to protect water supply systems against internal vacuum conditions that could drain a system by siphonage, burn out heaters, or collapse storage tanks.

Standards Compliance:

CSA Compliance to ANSI Z21.22/CSA 4.4; Certified to NSF/ANSI 372 by IAPMO R&T

Features & Benefits:

• Vacuum Protection: Prevents internal vacuum conditions that could drain systems by siphonage, protecting water heaters and storage tanks from damage.
• Lead-Free Construction: Low lead brass construction with less than 0.25% weighted average lead content ensures safe potable water applications.
• High Performance: Rated for maximum working pressure of 225 PSI and temperature of 250°F with 13 CFM capacity for reliable operation.
• Maintenance-Free Design: Durable materials including stainless steel spring and FDA-compliant elastomers provide long-lasting, trouble-free performance.

FAQ

Q: What size water heater or storage tank is the Zurn 34-VR10XL suitable for?

A: The 3/4-inch model is designed for commercial and residential hot water storage tanks and pressure vessels, with a rated capacity of 13 CFM to protect against internal vacuum conditions.

Q: Can this vacuum relief valve be installed horizontally or does it require vertical installation?

A: The valve should be installed on hot water storage tanks following the typical installation diagram, which shows vertical mounting on the top of the tank or pressure vessel for optimal vacuum relief protection.

Q: Is the Wilkins 34-VR10XL compatible with potable water systems?

A: Yes, it is certified to NSF/ANSI 372 for low lead content and constructed with FDA-compliant materials, making it safe for use in potable water applications in both commercial and residential installations.

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