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Brass automatic air vent, 3/8 inch thread, T-70H high-capacity model

Legend Valve

Legend Valve 110-333 T-70H Hi-Cap Auto Air Vent accessory

SKU CH-DYX4-XVYN9

Automatically releases trapped air from hydronic systems using a high-capacity 3/8-inch vent

  • Automatically removes trapped air from hydronic systems
  • High-capacity T-70H design handles large air volumes efficiently
  • 3/8 inch connection fits standard plumbing installations
  • New condition ensures reliable performance from first use
  • California Proposition 65 warning indicates chemical safety awareness

Hi-Cap Auto Air Vent

The Legend Valve 110-333 T-70H is a high-capacity automatic air vent designed for plumbing systems. It removes trapped air to maintain efficient fluid flow and reduce noise in hydronic heating or cooling installations. Suitable for residential and commercial applications requiring reliable air elimination.

3/8 inch connection fits standard piping

The unit features a 3/8 inch T-70H connection for direct integration into compatible pipework. No additional accessories or software are bundled with this component. The high-capacity design handles significant air volumes to protect system performance without manual intervention.

California Proposition 65 chemical warning applies

This product contains a chemical known to the State of California to cause cancer and birth defects or other reproductive harm. Installers and end users should review safety data sheets and follow local handling regulations. Buyers needing a vent without this specific warning cannot select this model.

Highlights

  • Automatically removes trapped air from hydronic systems
  • High-capacity T-70H design handles large air volumes efficiently
  • 3/8 inch connection fits standard plumbing installations
  • New condition ensures reliable performance from first use
  • California Proposition 65 warning indicates chemical safety awareness

Specifications

BrandLEGEND VALVE

Questions about this item

Will the 3/8" T-70H Hi-Cap Auto Air Vent need its internal float or seal replaced after extended service?

The vent uses a float-operated mechanism that can accumulate debris; periodic inspection and cleaning of the 3/8" inlet will maintain reliable automatic air release.

What pressure limit stops the T-70H from venting continuously during sustained system operation?

The T-70H is rated for 70 psi maximum working pressure; sustained pressure above this level will prevent proper seating and cause continuous discharge.

Does the Legend Valve 110-333 generate noticeable noise or heat when running all day on a hydronic loop?

As a passive automatic air vent it has no moving motor, so it produces no operational noise or heat; only normal fluid flow sound occurs at the 3/8" connection.

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