Vacuum Breaker 3/4"

This Legend Valve 3/4" vacuum breaker is a compact, solidly built brass backflow-prevention device that guards a potable water supply against contamination caused by back-siphonage. It is configured with a female iron pipe thread (FIPT) inlet and a hose-thread outlet, a combination that makes it especially well suited to drain lines, hose connections, utility fill points, and similar locations where treated supply water could otherwise be drawn backward into the plumbing system under the wrong conditions.

A vacuum breaker works on a simple but vital principle. If a vacuum, or negative pressure, develops in the water line, perhaps due to a sudden drop in supply pressure or a water main break, the device admits air into the line, breaking the siphon so that contaminated water from a hose, container, or drain cannot be pulled backward through the connection and into the potable supply. In water treatment installations, this kind of cross-connection protection is frequently required by local plumbing codes at drain and fill points, which makes the vacuum breaker a small but genuinely important safeguard for protecting drinking water quality.

• 3/4" vacuum breaker providing backflow protection
• Durable, corrosion-resistant brass construction
• FIPT inlet by hose-thread outlet connection
• Prevents back-siphonage at hose and drain connections
• Helps installations meet plumbing code cross-connection requirements
• Legend Valve quality at approximately 0.19 lbs

Whether it is used on a water softener or filter drain line, a utility hose bibb, a chemical fill connection, or another cross-connection point, this brass vacuum breaker helps keep the potable water supply safe and helps keep installations compliant with code. Its solid brass body resists corrosion for long, reliable service in the typical conditions found in utility rooms and equipment areas. Always confirm the local plumbing code requirements for backflow protection at your specific connection, and install the breaker in the correct orientation according to the manufacturer's guidance so it functions as intended. The convenient hose-thread outlet makes this a natural fit wherever a hose attaches to treated supply water, and because the device operates automatically with no electricity and no routine adjustment, it provides ongoing, maintenance-free cross-connection protection that quietly does its job year after year in the background of a water treatment installation.