Bulk Tech is established in 2003 China ,covered 20000 square meters and there are 228 workers. Our production capacity amounts to 6800 pieces per year. Bulk Tech is focused on rotary valve ,plug diverter and roots blower . Bulktech is a located in Zhenzhou Henan China, with convenient transportation access. All of our products comply with international quality standards and are greatly appreciated in a variety of different markets throughout the world.Bulk Tech Rotary airlock valves (which can also be called airlock) are used in a wide range of applications , where there is a need to minimize system air losses while transferring solid bulk material between chambers with different pressure level and dose and feed solid bulk products within the processes in the pharmaceutical, chemical and food industry