Hvac duct work gravity shutter ventilation transfer air grille gravity louver

Hvac Ventilation System Aluminum Stationary Louver Gravity Shutter

Gravity Louver:

          It applies to air conditioning room with positive pressure. It exhausts air automatically. Usually the blade is vertical, it isolates the air circulation between indoor and outdoor. When the indoor pressure is bigger than the outdoor pressure, the air flow blows the blade and the inside air is exhausted. The air isn’t able to flow into room if the indoor pressure is smaller than outdoor pressure. It has single-track non-return function. Air volume damper that adjust air volume and air speed or filter that decrease dust and purify air can be set up in the back of air outlet according to customer’s requests.

We use high quality extruded aluminum to produce the gravity louver which is usually used on the outside of walls. This aluminum louver design is intended for air extraction and automatic closet of duct, when the air equipment is switched off.

GL-VA gravity louver has been anodized. It can be accurately adjusted for smooth performance. Optional colors are RAL9010 and RAL9016. Only when the exhaust fan is running that the blades of this type air louver can be opened. The blades will close automatically to preventing rains , dust, insects from getting inside rooms, one the exhaust fan is turned off.

Features:

• Made of high quality extruded aluminium profile.

• It is used for air extraction and automatic close of duct when the air equipment is switched off.

• RAL 9010 / RAL 9016/ Anodized

Drawings& data:

Selection Table:

Sample pictures show:

Weather louver WL-VA:

Features:

*Made of high quality extruded aluminum profiles.
*Water proof blades design.
*Wire mesh optional.

*Filter optional.
*Opposed blades damper optional.
*Color RAL9010 or RAL9016, or Anodized.
*Mounted in exterior wall and used for exhaust or air intake.

 Drawings&sizes data:

Product sample picture:

WL-VR:

*Round weather louver optional :
*Standard size :100,150,200,250,300mm

Features:

• Made of high quality aluminum.
• Water proof baldes design
• Wire mesh optional.
• Color RAL 9010, RAL9016,Anodized

Package:

inner PVC filmed packed,outer strong cartons
with damper 5pcs/ctn
without damper 10pcs/ctn

LCL in standard export pallets, FCL in 20GP,40GP, or 40HQ container.