1. Any color 2. On everything requires of you 3. You can provide technical drawing 4. 40% prepayment 60% cash before deliv Application:Type DbSzF double layer and double door hammer air lock flap valve is widely used as dust hopper discharge device of all kinds of removing dust equipment and all kinds of feeding and and discharge device of all kinds of mill, dryer and material silo in building material, metallurgy, chemical industry, generating plant etc. industry.Structure features:Type DbSzF double layer and double door hammer air lock flap valve is used steel plate welding structure, balance pole restore postion, tight structure,stable and dependable operation.Work principle:Type DbSzF double layers and double door hammer air lock flap valve will open automatically with the gravity of level system and finish the conveying of material.

powder valve / process pipe valve (DbSzF Double layers and double door hammer air lock flap valve )