No PressureVentilation Door Introduction

No Pressure Ventilation Door(Balanced pressure ventilation door) is mainly used for underground into backinto the lane and the main return air lane between each contact, which is the substitutefor all air door.
The damper is an ideal air door of our country coal mine at present, and ismainly used for underground into return air lane and the main return air lanebetween each contact which, it breaks the old traditional damper structure fora long time. It is mainly used in underground into the return airway and intothe return airway main liaison between each lane, it is breaking the longtradition of old-fashioned structure type throttle.It cleverly put on thepressure acting on the throttle through the equilibrium structure to convert itinto a force, clearly showing the damper structure is unique, easy to use, safeand reliable by experts and users highly rated, is the wind Lane used throttlealternatives.

No PressureVentilation Door Main Feature

1、The ventilation door opening force is small, and the size of the openingforce of the wind pressure and wind has nothing to do；
2、Two-way isolation, wind leakage air volumeis small, no need to reverse damper；
3、Steel structure, simple structure, strongand durable；
4、Close the steady, safe and reliable；
5、Good fireproof performance, caneffectively prevent the possibility of fire belt transport lane, prevent fireand other harmful gases into the roadway；
6、Pressure balance type damper is good soundoperation, also can power operation, such as add a set of control system, canrealize the air door automatically open；
7、Between two air door which can realizemutual atresia.