Taco 400-4 1/8-Inch-NPT Float Air Hy-Vent | High-Capacity Hydronic Vent

Efficient Air Venting for Large Hydronic Systems

Meet the Taco 400-4 1/8-inch-NPT Float Air Hy-Vent, a high-capacity vent designed to remove trapped air from hot water circuits. Its brass body, nickel-plated finish, and robust build blend durability with a clean appearance in boilers, radiators, and baseboard runs. This vent is built to support demanding installations without crowding valuable piping space, making air removal a quieter, steadier part of system operation.

What it offers

• Sturdy Brass Construction
• Brass body with nickel plating resists corrosion and wear
• Designed for hot water radiators, baseboards, convectors, radiant panels, and small unit heaters with a maximum working pressure up to 150 psi
• The Taco 400 HY-Vent opens for cleaning and maintenance when needed

Placement and compatibility

Place the vent on the boiler or at high points in the system to support efficient air removal. Connection options include 1/8-inch, 1/4-inch, 1/2-inch, and 3/4-inch threaded fittings to fit larger installations.

• Versatile placement: boiler, radiators, baseboard runs, and radiant panels
• Compatible with hot water radiators, baseboards, convectors, radiant panels, and small unit heaters
• Operates up to 150 psi, supporting demanding hydronic networks

Maintenance and care

The top is threaded for easy opening and cleaning to remove air and debris. The brass-body construction offers durability, while the nickel-plated finish adds a subtle, long-lasting shine.

Note: Follow the manufacturer guidelines for installation and safety. This vent helps with air removal and steady operation in qualifying hydronic systems.

Why choose the Taco Hy-Vent?

• High-capacity venting for larger systems
• Rugged construction designed for long life
• Flexible connection sizes for wide compatibility