3/4" Bronze Lift Check Valve, Lead-Free, Vertical, Sweat

3/4" Bronze Lift Check Valve – Lead-Free, Spring-Loaded Backflow Protection

The 3/4" Bronze Lift Check Valve is engineered to prevent reverse flow in potable water and hydronic systems, offering a durable and code-compliant solution for backflow prevention. Constructed from lead-free, dezincification-resistant (DZR) bronze, this valve meets NSF/ANSI 61 and 372 requirements and is suitable for both residential and commercial applications where reliability and water safety are paramount.

The valve features a spring-assisted self-closing mechanism and PTFE seat, ensuring positive shutoff with low cracking pressure. Designed for solder end connections, it allows for easy integration into copper piping systems using standard soldering methods. It can be installed in both horizontal and vertical (upward flow only) positions, making it a flexible option for a variety of system layouts.

Key Product Features

• Lead-Free DZR Bronze Body – Compliant with Safe Drinking Water Act standards and resistant to corrosion and dezincification.
• Spring-Loaded Closure – The internal spring ensures reliable operation and prevents backflow under reverse pressure conditions.
• PTFE Seat Disc – Provides a resilient, leak-tight seal for long-term system protection.
• Solder End Connections – Designed for copper tube installations using sweat fittings.
• Dual Orientation – Rated for both horizontal and vertical installations (upward flow in vertical only).

Technical Specifications

• Nominal Size: 3/4 inch
• End Connection: Solder (Copper Sweat)
• Pressure Rating: 250 psi (non-shock, cold water)
• Temperature Rating: Up to 300°F
• Pressure Class: 125 lb
• Compliance: NSF/ANSI 61 & 372
• Warranty: 5-Year Limited

Installation Notes

Install the valve in accordance with directional flow markings and local code requirements. Use standard plumbing practices for copper solder fittings, ensuring clean, properly prepped tubing and uniform heat application. Allow sufficient access for future maintenance if necessary. This valve is designed for low-maintenance service but should be inspected periodically in critical systems.

Application Scope

This lift check valve is commonly used in potable water systems, heating loop return lines, and general plumbing applications requiring passive backflow protection. Its compact body and lead-free construction make it an ideal solution for projects where code compliance and performance are equally important.

Summary of Advantages

• Lead-Free Certification for potable water applications
• Spring-assisted closure for fast and effective backflow prevention
• High temperature and pressure ratings for demanding system conditions
• Reliable brass construction with PTFE seat for superior sealing performance
• Easy integration into soldered copper lines

Engineered for Performance

The 3/4" Bronze Lift Check Valve is a contractor-grade solution trusted for its strength, consistency, and certification in drinking water systems. With a spring-loaded mechanism and robust DZR bronze body, it ensures backflow protection and long-term service in code-sensitive installations.