Boiler Feed Pump Pumping
by John
Yesterday I reseated the pump valves, reassembled the pump, then tested it on steam.
Most of the following video has the boiler at only 25psi, but I did run it off camera at up to 75psi.
After making the video I redirected the exhaust steam from the pump into the firebox. It actually seemed to improve the gas flame, maybe by acting as a blower. Not so sure about this being permanent though, because the exhaust steam contains oil from the displacement oiler, and I dont want that oil to be deposited in the firetubes.
I will make a water tank to supply boiler water. Maybe the exhaust steam could be passed through a heat exchanger in the tank, so the boiler feed water is preheated.
(if the video is not showing, click on the https link below)
johnsmachines 
Hi John,
Well done on the feed pump . Are the plans for that pump available commercially?
I have just about completed my Bolton triple engine and looking for a next project.
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Sorry, but I just found their website. Will follow up.
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I would be very interested to see some photos of your triple Graham. jviggers@iinet.net.au
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John, here is a link to my engine’s first run on steam. Rather crude video, and the protractor is still attached to the HP end. The clicking noise was traced to a loose big end bearing and is now quieter. Yet to make a stand and will eventually partner it with a No. 11 engine and pump for the condenser feed water.
Watching your build was an inspiration for me to get on with my build, so thanks for sharing it.
Cheers
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Hi Graham, I am having a problem bringing up the YT video. If you le me know the title of the video, or the name under which you posted I could do a search. John
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Hi John, a YouTube search of “bolton triple expansion engine” should bring it up.
Cheers
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Found it! Well done! Very satisfying moment. Thanks for posting. Keep posting.
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Hi John
Great job looking forward to seeing this pump if I can get to your club get together next month I will be in Melbourne from 1st of next month, and should be able to work a visit into our schedule.
Cheers
John Emery
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Excellent! Will look forward to that.
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