Bags for the contained transfer of bulk substances for commercial and industrial use

[Valves of metal, other than parts of machines; manually operated metal split butterfly valves and manually operated metal valves for controlling the flow of substances; containment valves, namely, metal valves for controlling the contained transfer of substances not being parts of machines, metal coupling devices other than parts of machines for use with integrated material handling equipment, namely, couplings of metal for containers; metal coupling devices for the contained transfer of pro...