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bob

bob

Joined on January 12, 2005

Last Post on August 15, 2014

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Cast Iron

@ August 15, 2014 12:08 AM in thread sealant

The use of teflon tape or paste is not recommended for connections on cast iron baseboard or cast iron headers on coils . It is too easy to over tighten and crack the casting .

Parts

@ August 14, 2014 11:41 PM in Need help finding parts

You need to find a wholesaler that handles U.S.Boiler Baseray . The part you are looking for is called a valve inclosure .

3 D

@ August 14, 2014 3:42 PM in Boiler Room Layout Mock-up – reasonable, flawed or both?

Remember that when you build this it will be in 3D . Mount your piping in two planes. Mount all verticle pipes in one plane and all horizontal pipes in the other . When ever you change directions change planes . You will never run into yourself this way .

Article

@ August 14, 2014 3:33 PM in John Schulz Article

http://www.heatinghelp.com/files/articles/1328/116.pdf

Pump

@ August 5, 2014 11:02 AM in flow on system?

Horace , how is your existing system controlled ? Does the pump run continually or does it go on and off with the burner ?

Juice

@ August 1, 2014 1:12 AM in Brazing without nitrogen?!

Chris , what kind of "juice" are you going to put in that GE monitor dome?

N2

@ July 29, 2014 2:29 PM in Brazing without nitrogen?!

Chris, from my 40 years experience working for a number of contractors I would say N2 is the exception rather than the rule . If you question the boss they usually tell you "that's why
they invented filters" ! The only jobs that used it consistently were medical gas jobs and chemical research .

1965

@ July 24, 2014 5:15 PM in What did it cost in 1960?

In 65 we would do a three bed ranch with a basement for $850.00 . Triad boiler and baseboard 210º design temp 1000 btus / foot all piping below joist . One man one day , union shop. Triad baseboard had end caps screwed on and dead soft copper tails installed.
Chicago area .

Golden section

@ July 23, 2014 12:42 AM in Just wondering about oil tanks

The golden section / ratio is 1.618 to 1 or rounded 1.62 . The proportions of the end view of the 275 gal oil tank are 44/27 or 1.62 to one. The proportions of the Parthenon are the same. Coincidence ? Great minds .

No diff

@ June 25, 2014 7:27 PM in Initial target Flow Rate calculations

Eastman, not to worry. You can read the full engineering report in the attached PDF


The difference between the coefficients in the two equations is only one-half of one per cent. This deviation is easily within the limits of experimental error, and it may be concluded that the rate of heat emission is the same for water entering through the upper tapping as for water entering through the lower tapping. For this particular radiator the equation may therefore be written:

Ah, Culture

@ May 22, 2014 5:29 PM in Ah, Culture

Thanks Dan . I didn't realize how much the pipefitting trade has advanced since I retired.
I would have to substantially change my skill set (not to mention my physique) to perform today. The video is very informative especially the graphic representation of a wye.

Heat-x

@ April 16, 2014 1:13 AM in The dreaded Entran

I can't see what good a heat exchanger will do with cast iron radiators . It will stop the boiler from seeing the oxygen but not the radiators .

vents

@ April 11, 2014 5:17 PM in Radiator air vent preference?

John , google "Jerry Gill Plumbing" click on videos and then heating . Jerry has lots of first rate info on his site .

Ice

@ March 29, 2014 11:12 AM in Pipe Freezing

Mike , FWIW I have done this a few times . I fabricated a cardboard box around the pipe and filled it with dry ice pellets , worked great . Once I notched a 5gal bucket to fit the pipe .
I wasn't working in such tight quarters. I was working for a large mechanical contractor at the time so if it went south the worst that could happen to me is get run off.

Vents

@ March 25, 2014 11:52 PM in Senior Trainer

Google Jerry Gill plumbing .

Injuries

@ March 21, 2014 11:56 PM in Pipefitters shoulder

I'm a retired fitter, just received my 50 year pin from the UA . I hate to tell you this but they won't let you retire until you're 80% scar tissue .

Rattle

@ March 2, 2014 12:59 AM in Rattling coming from baseboard heating system

It looks like your tank is screwed into the bottom port of a flow control valve . Open the valve with the manual opener and see if the rattle stops .

CO

@ February 25, 2014 11:35 PM in How many of you carry

Which is heavier CO or air ?

Ell

@ February 19, 2014 8:30 PM in friction loss

B&G lists 5 equivalent feet for a 2" screwed 90º ell .

Air

@ February 5, 2014 4:38 PM in Flue gas due point question

Nick and Carl , I stand corrected . Good information Nick . I worked in the mountains during the 80's on the west slope . When I moved there from Chi . I couldn't get a straight answer from anyone about altitude and btu's even the service men for RMNG . I finally got hooked up with the chief engineer for RMNG and he gave me the formulas and the base pressures for the towns on the west slope. He never mentioned WOBBE numbers . I don't think Rocky Mountain Natural Gas was that sophisticated at that time .

Air

@ February 5, 2014 2:23 PM in Flue gas due point question

Nick, the utility company does not add air to control but content . The reduction is due only to altitude .

Gravity

@ January 30, 2014 6:33 PM in All we are saying, is give grav-i-ty a chance!

Kudos, you can't beat gravity. Nice pipe work Timco .
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