6" OD Self Cleaning No Clog Aluminum Blast Gate Cut Off Valve for Dust Collec...

Blast gates are used to open and close branch ducts to divert airflow only to those machines in operation. This conserves air volume and keeps suction strongest where dust is being produced, thus maximizing dust extraction. Outer case made from cast aluminum with sliding steel gate and locking knob. Typical gate allow debris to accumulate in the groove preventing the gate from closing fully, causing leaking and reducing suction. The slot on these units extends through the back of the base to allow debris to be pushed out of the groove and prevent buildup. Will fit 6" diameter hose or ducts Direct air flow to exactly where you need it and maximize dust extraction by opening and closing select ducts. Open slot at back to for self-cleaning, no-clog operation Cast aluminum, steel sliding gate, locking knob