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Re: Mega press for steam question
I wouldn't use either one on steam if I had the choice.
Re: Mega press for steam question
This is another case of "just because you can, doesn't necessarily mean you should".
Re: Mega press for steam question
I've used 3" mega press for a few repairs on a main. With this job it was the best option to avoid a major project. You have to specify the right fittings and ensure the pipe is supported correctly. It has its place, just not fond of using it for every fitting during a changeout. 2 1/2 and 3" mega press flanges and couplings have saved the day on a few jobs to make the transition to near boiler piping where threading in place would not be practical or increase the cost for the customer by a decent amount.
Re: Mega press for steam question
Not a good idea to use MegaPress on steam, since it's too easy for the fittings to sag over time. And we know what that causes……………
Re: Proactive steam valve replacement
@Jamie Hall They were used on non-vacuum systems as well, Jamie; but Hoffman’s intent was to eliminate the valve packing so that air couldn’t enter on either a mechanical vacuum system or a vapor-vacuum system. They told me that back when I was their rep.
Re: New Energy Kinetics Boiler: Was Kettling, Now its a Water Hammer Issue
We still need to check it. In the first two pics above, we can see a nozzle container sitting on top of the boiler. The end cap on it is blue- which is the color Delavan used for solid nozzles. Hollow nozzle containers have red end caps.
Re: Oil boiler and outdoor Wood Boiler
Don't worry about the flow inside that HX, it will handle all that you have to give through the pex from the boiler. Very little pressure drop in a HX of that size, regardless of the connection size. It's all about the square footage of the HX not the physical size.
Typically the HX has some flow rate and pressure drop info on the label or any documentation provided.
Usually you select a HX with the design software, free online. You enter flow rates and temperatures, it spits out the choices. A couple examples. The 5X20" in this example moves 73,000 btu/hr
hot_rod
Re: A Question About Monoflow & Venturi Tees- Scoop vs. Orifice
"Diverter Tee" sounds good to me
I suppose the word Monoflo(w) is like saying Kleenex. A trade name that became generic.
The Red Ring's I've used had the cone. The one's I've seen marked Monoflo have the ramp. Who knows if that's universal.
You mentioned nickels in tees. On jobs, I've encountered some 3/4 x 3/4 x 1/2 copper tees that had 1/2 x 3/8 copper reducing couplings tack-brazed inside. Since they were in various facilities, I wonder if they were factory made somewhere.
PGB1
Re: Oil boiler and outdoor Wood Boiler
looks like you have a number of pipe size reductions? On the back of the boiler, then at the HX also. It all comes down to how many gpm you are trying to move through those circuits. The underground piping size and length is where the bottleneck tends to be on those OWF installs.
Also, you need a circulator after a 3 way mix valve. Looks like you have a pump pushing down and into the 3 way.
hot_rod