Full Blast Gate
Blast gates are used as volume control dampers to balance systems, or save air, heat, and power when a machine is not in use. Full blast gates are installed in line, with a pipe fitting over the collars on both ends. They are furnished with a set screw so that the blade can be firmly positioned for volume control.

Half Blast Gates
Half blast gates are installed by cutting a slot in the pipe, they are furnished with a set screw so that the blade can be positioned firmly.