|
Post by briank on Dec 28, 2017 10:20:21 GMT -8
Hi folks, I was visiting my local metal shop today, and I told him I need a cheap 100% effective bypass draft control damper for 6" stove pipe. He recommended I try a blast gate. They're "used to open and close branch ducts in a dust extraction vacuum system allowing air to be diverted only to machines that are operating, thus conserving air volume." Its actually cast aluminum with a sliding galvanized steel blade with a locking screw. Since it will be open on start up, he didn't think the galvanized metal would be a problem with the temps in a rocket heater, and when its closed its completely out of the direct exhaust flow. I can dissemble it and easily replace the blade with heavier gauge stainless if necessary. Its also relatively light and fits inside 6" stove pipe well. A 6" is ~$15. They make various sizes from 2” to 24”. www.blastgateco.com/Blast-Gates.php
|
|
|
Post by Dan (Upstate NY, USA) on Dec 29, 2017 7:16:36 GMT -8
cool thanks for sharing
|
|
manU
New Member
Posts: 41
|
Post by manU on Dec 30, 2017 15:42:24 GMT -8
Probably Good as a dumper too. Thanks.
|
|
|
Post by briank on Dec 30, 2017 15:55:45 GMT -8
Probably Good as a dumper too. Thanks. Dumper?
|
|
manU
New Member
Posts: 41
|
Post by manU on Dec 30, 2017 16:38:31 GMT -8
Sorry, damper? Ja Ja. For closing the chimney. Big impact on efficiency to have an airtight closure.
|
|
|
Post by briank on Dec 30, 2017 18:11:14 GMT -8
Sorry, damper? Ja Ja. For closing the chimney. Big impact on efficiency to have an airtight closure. Ok yes, that’s exactly what I was originally trying to say so we’re on the same page. (All I could think of for “dumper” were similar gate valves in camping trailer porta potties. )
|
|