Situated in India S.K.ENTERPRISES is Manufacturers of Rotary Air Lock Valve in many sizes, application For handaling fine dust. It is made by cast iron body and also fabricate Like m.s and stainless steel body. We are manufacturing square and Round flanges r.a.v. many type of sizes like, 150 x 150 , 200 x 200, 250 x 250 , 300 x 300, 350 x 350 , 400 x 400, 150 dia to 300 dia also.