Watts 590719

Watts 590719 Duo Vent 1/8" Water Float Vent delivers dependable air and water venting for hot water and boiler systems. Rated for up to 150 PSI and temperatures up to 240°F, this vent helps prevent air locks, reduces pump chatter, and maintains system efficiency. The float mechanism automatically vents air while closing to minimize water loss, and it replaces FV4-1/8 for easy upgrades in existing plumbing. Designed for 1/8" lines, it fits standard fittings and enables quick, worry-free installation.

Whether you're upgrading a residential water heater or a light-commercial boiler, Watts 590719 provides reliable performance in tight spaces. The compact form and durable construction make it a cost-effective replacement choice, delivering long service life with low maintenance. Ideal for both new installations and retrofit projects, it helps simplify system balancing and reduces maintenance by preventing air pockets that disrupt flow. This 1/8" water float vent is designed for compatibility with standard fittings, ensuring quick, hassle-free installation in existing lines.

• Pressure rating: Up to 150 PSI
• Temperature rating: Up to 240°F
• Vent type: 1/8" water float vent for precise venting
• Replacement: Replaces FV4-1/8
• Installation: Designed for quick, hassle-free retrofit in existing lines