Review on HILTI Dispenser Insulating Sealant CF DS 1 by Tom Roberts

I carry a filled canister with me...even though it hasn't gotten any cleaner yet. Rotate the rear handle to open it fully, turn off the fuse, and foam will come out every time. I've used both Hilti and other foams with this gun with no problems. After applying the foam, turn the rear black knob until it stops spinning (closed), engage the safety lock, and store upright. I've never had a problem and save a lot of money on foam compared to the individual cans you can buy where they always fail after a single use.