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Ventech round louver manufacturer for promotion

Ventech round louver manufacturer for promotion

Back Draught Damper
Guangdong, China (Mainland)
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Back Draught Damper




Ventilation damper the type back draught damper is a non-return damper for extract air. Made of galvanized sheet, for installation into round ducts, to shut the duct automatically when extraction of air stops. Prevent the outside air flow back.




Nominal sizes: 100, 125, 150, 200, 250, 315.

For non-return air control.

Fame made of galvanized sheet 0.8mm, inner shutter made of aluminum 0.3mm.


For installation into round ducts.

Specially designed springs allow accurate control of the shutter.


 Ventech round louver manufacturer for promotion-1

Ventech round louver manufacturer for promotion-2

round louver is one of the factors that Yingde Ventech Air Conditioning Co.,Ltd emphasizes during material selection. The winding process will be done with high speed & high precision by SUMWIC machine
What Yingde Ventech Air Conditioning Co.,Ltd is utilizing for material of round louver is double checked for quality. SUMWIC machines have extremely strong anti-jamming capabilities
All round louver may be the same, but round louver make us take the lead.Most of SUMWIC winding machines has vernier caliper functions
It has been proved through industrial tests that round louver has met design requirements. All SUMWIC machines have low noise level
round louver attracted attention with a particular design, it was regarded a round louver with great expansibility. SUMWIC winding machine features excessive speed tracking and the calibration of the speed
round louver can stand all kinds of strict tests before putting into use. SUMWIC winding machine can adjust the winding speed automatically to the most steady state
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