Common specifications and models of flanged pneumatic ball valve. Is port 2 open or closed? Water plugging is classified according to the original data:
1. Pure type: Made of natural, butyronitrile, chloroprene, butyl, etc.
2. Compound: A product made of a variety of synthetic or natural processes.
3. Skeleton material type: the product is coated with polyester, nylon, nylon, aramid and other fiber fabrics or processed with other materials.
