I came up with my designs from Lightnings posts so he/you gets the credit, but here is one of the 2 swinging gates with a spring and bolt I have on my stove, one on each side. The string you can see is a gasket I added this year. At first I had holes drilled on the inside part but ended out taking those out and just aimed both ends towards the bottom of the back of the stove. It isnt uncommon for the back outside of my stove to shoot up to 700-800 degrees burning off gasses with anthracite and dare I say higher with soft coal or wood on occasion. Theres a baffle over where those flames hit. The covers do leak a little but its likely the only leak I have so doesnt seem to matter.Lightning wrote: ↑Fri. Dec. 14, 2018 6:22 pmI ended up just using the pipe caps. I cut a set of caps into a 3/4 pie, another set I drilled small holes, and then I also have solid caps to cut the secondary air completely. You could do something similar or fashion a swinging plate with spring resistance to hold it in place.
There used to be 2 rows high of firebrick inside this stove so the pipes are higher than they probably should be now, but it works so i left it there after I removed a row.