purpose

Applied to the through wall ducts of ventilation and air conditioning systems with fire prevention requirements, to prevent the spread of fire along the air ducts.

function

Normally open, when the fuse is activated at 70 ℃/150 ℃, the valve automatically closes.

Manually turn on or reset.

texture of material

Galvanized sheet

Stainless steel (used for clean air conditioning and kitchen exhaust systems).