We are offering air lock. nice india rotary airlocks start with heavy duty castings. State-of-the-art equipment turns nice's castings into precisely-machined valves with consistently-tight clearances. Nice airlocks are used in pneumatic conveying, dust control and flow control applications. Nice airlock's are built such that it can work 24 hrs a day, 7 days a week and 365 days in a year, without any halt.