Gravity Louvers
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This louvers serves as a not-return damper and can be used at the exit terminal ducts and fans. Certain pressure is usually required before the damper opens to expel; the exhause air, which ensures the elimination of backflow.
The blades are made from light weight aluminium sheets, while the frame is made from extruded aluminium.
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The GL is a wall mounted device that is composed
of a set horizontally mounted blades that are normally closed and
are free to rotate about their horizontal axis.
Note: All dimensions are in mm with tolerance of # 2.5mm unless otherwise specified.
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Free area ratio = 0.81 for 100% open blades.
To calculate the air flow rate
0.81 x A(mm) x face velocity (fpm) CFM = ------------------------------------------ 144
0.81 x A(mm) x B(mm) x face velocity (m/s) L/S = ----------------------------------------------------- 1000 |
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Contact : 28, Laxmi Industrial Estate, Off. M.G. Road, Bangur Nagar, Goregaon(W), Mumbai - 90 | +91-22-28798791 |