WTB a 3-4 in duplex boiler pump
Moderators: gwrdriver, Harold_V
WTB a 3-4 in duplex boiler pump
Hi ,
Anyone have an extra working steam pump for sale. Need it in the 3-4 in range (loa).
Tested and Must work against at least 60-70 boiler psi. Vertical or horizontal.
pm me.
THANKS!
Anyone have an extra working steam pump for sale. Need it in the 3-4 in range (loa).
Tested and Must work against at least 60-70 boiler psi. Vertical or horizontal.
pm me.
THANKS!
- tsph6500
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Re: WTB a 3-4 in duplex boiler pump
Send a PM to Steamingdon. He builds VB pumps.
Best regards,
Jim Leggett
Montreal Live Steamers
www.montreallivesteamers.org
A Founding Member of the Tinkerbell Scale Society - Northern Division
I'm an A.R.S.E. (Association of Railroad Steam Engineers)
Toad Swamp & Punk Hollow Railroad - Head Tycoon
The Juvenile Traction Company - CEO & Apprentice Machinist 3rd Class
White Mountain Central RR - Engineer & Fireman
Jim Leggett
Montreal Live Steamers
www.montreallivesteamers.org
A Founding Member of the Tinkerbell Scale Society - Northern Division
I'm an A.R.S.E. (Association of Railroad Steam Engineers)
Toad Swamp & Punk Hollow Railroad - Head Tycoon
The Juvenile Traction Company - CEO & Apprentice Machinist 3rd Class
White Mountain Central RR - Engineer & Fireman
- Bill Shields
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Re: WTB a 3-4 in duplex boiler pump
Thanks for reply. I bought a great duplex pump from a board member a few years ago and can't remeber who he was....maybe it was him?
I will pm him.
I will pm him.
-
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- Joined: Sun Feb 22, 2009 9:21 pm
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Re: WTB a 3-4 in duplex boiler pump
Xrad, It was MEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE! Thanks for remembering
steamer
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Re: WTB a 3-4 in duplex boiler pump
He has not visited the board since May 29th, so he hasn't read your response.steamingdon wrote:PM sent no reply? Will try telephone call?
Don
Harold
Wise people talk because they have something to say. Fools talk because they have to say something.
Re: WTB a 3-4 in duplex boiler pump
hey, sorry for late!! reply, Don. was off teaching myself how to code C++ and then make 100's of projects, and rebuilt a few cars, and now I'm back into steam.
anyway, one project I am currently trying to finish is this self contained boiler system which uses one of your 3/4 pumps! Works like a champ. You can see it here:
https://www.youtube.com/watch?v=8-Eo9tzdVhM
and the controller build here which includes the C++ code if you have an arduino IDE:
https://forums.adafruit.com/viewtopic.php?t=191380
anyway, one project I am currently trying to finish is this self contained boiler system which uses one of your 3/4 pumps! Works like a champ. You can see it here:
https://www.youtube.com/watch?v=8-Eo9tzdVhM
and the controller build here which includes the C++ code if you have an arduino IDE:
https://forums.adafruit.com/viewtopic.php?t=191380
- Bill Shields
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Re: WTB a 3-4 in duplex boiler pump
No reason it should not work..the logic is sound.
All you need is an accurate way of measuring water level, which is much easier on a stationary boiler.
Detail photo of control valve?
All you need is an accurate way of measuring water level, which is much easier on a stationary boiler.
Detail photo of control valve?
Too many things going on to bother listing them.
Re: WTB a 3-4 in duplex boiler pump
steam control valve is servo operated, left side of pic. The sensor is brass, stainless, and teflon. If more work gets done on hull, I will begins a new thread... yep, lab tests often different than real life...if sensor triggers ECU too often, I will change the code to add a delay w/re-read. I wrote the code to include a rotary encoder which is used to set pump run time. It is at 5 seconds now, but can be set anywhere between 1-40 seconds...but I shake and rock the boiler and it is fairly accurate with center top sensor location.
- Bill Shields
- Posts: 10588
- Joined: Fri Dec 21, 2007 4:57 am
- Location: 39.367, -75.765
- Contact:
Re: WTB a 3-4 in duplex boiler pump
5 sec will not even get the pump warm.
Too many things going on to bother listing them.
Re: WTB a 3-4 in duplex boiler pump
I'll sell you a set of PROVEN plans for a TRUE duplex pump for $100 US: 5/8" x 5/8" x 3/8" steam cylinder bore x stroke x water cylinder bore. All cylinders are fully double acting.
This pump falls within your dimensional requirements, and mounts vertical with the steam cylinders at the bottom.
Pictures of this pump are somewhere on this blog, where this type of pump was discussed extensively.
Note that a true duplex pump has more complicated valve gear than the Brocklin pump discussed herein. While Brocklin's is a beautiful model, it is not a duplex pump.
Someone with a small CNC mill should not have too much difficulty in building one.
I built three pumps to these drawings on manual machines and they all work very well. Sold two of them and kept one for my CPR Hudson 2888.