... performance of Flex Flange Butterfly Valve: 1,flange type,size: 2" -72", 2,rating:150lb-600l. Two- ... outstanding performance. 1. It is light and small in size and easy to disassimble and repair;2. It ... incorresive gases, liquids, semifuid and solid powder in them, Which be long to the pipe system ... and energy services. These valves can be ficed in any sected postion.Triple offset butterfly valveThe seal ...