·Applicable Field：Grain, Wheat Flour Milling, Feed Industries ·Applicable Material：Powder, wheat flour ·Function：Ensure the stable pressure of the conveying system during pneumatic conveying and unloading . ·Performance characteristics：Precisely casting by stainless steel, close-ended rotor, compression type of sealing, units of observation window made by aluminum alloy ·Patent No.:201420016643.0/201420016698.1Negative Pressure Conveying Use Rotary Airlock Valve, according to customers usage, we can offer open-end rotor and close-end rotor. The double combination structure of oil-free self-lubricating SF sleeve and VD sealing ring are used. According to customers demands, we also adopt the dual combined sealing structure of high-performance Gly ring and VD sealing ring. The end face self-discharge channel, the end face and the shell are double-positioned for air supply, and the aluminum alloy observation window assembly is attached. According to customers usage, this type of rotary valve can be made of stainless steel and casting iron.The negative pressure conveying use rotary airlock valve is used mainly for relatively free-flowing, non-cohesive materials such as wheat flour,grain, rice, coffee beans, salt, and sugar. Usually they are used under cyclones and other dust collecting devices.

Q1. What are your advantages  ? A1.Our Airlocks can operate smoothly for 6-8 years with SKF Bearings, ISO 600-3 nodular cast iron material, and professional design with our own patents. Since we are manufacturer, we have our own supply chain and quality control system. So we can provide competitive price as well as good quality. Q2. What kind of payment terms and transportation do you accept ? A2. We accept payment through Alibaba, TT, LC, air transportation and sea transportation are available. Q3.Can you do the supporting installation and design according to our needs or do you only sell rotary valves ? A3.Yes, that is available for use to do the installation and design according to you demands.