The gravity valve is used to automatically shut off the air flow when the fan is turned off. They are used in supply and exhaust ventilation systems for air intake or exhaust.
These grilles are made of high quality aluminium profiles in the form of a frame, and consist of horizontal movable vanes that open under the pressure of the air flow and close under their own weight when the fan is off.
The grille design includes both standard (hidden) mounting by means of springs and by means of a screw connection (mounting holes are countersunk on the front flange).
The profiles are coated with heat-resistant powder paint, which provides reliable protection against negative environmental factors and prevents premature product wear. The standard colour of painting is white, but at the customer request it is possible to paint in another color according to the RAL catalogue.
Fitting sizes LxH with 5mm steps.
For size L≥600mm, a dividing profile is used.
В-25-35 – gravity valve that works for the release of air "В" (exhaust system)
П-25-35 is a gravity valve that operates on the air intake "П" (supply system).
В-25-35 (RAL-9016) 400х300h – works for the release of air, springs mounting, white colour.
П-25-35* (RAL-9016) 400х300h – works for air supply, screw mounting (mounting holes are located on the front side of the grille frame), white colour.
Can be delivered with adapter for connection to air duct.