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[mlappin]

I was referring to the fact your pump will build some pressure forcing the water thru the system and back into the stove.

Gravity flow of liquids means exactly that, it’s to be used as a supply hose.

[juddspaintballs]

Oh well.  Good old fashioned automotive radiator hose should work just as well too.  It's made for low pressure cooling systems, can take the heat, and it's cheap and readily available.

[U.P. Doug]

The hose I used is McMaster- Carr number 5591k15. High temp silicone coolant hose. Rated for 170 psi -65 to 350 degrees. I used barb style fittings and crimp style clamps, seems to be working great so far.

[mlappin]

The hose I used is McMaster- Carr number 5591k15. High temp silicone coolant hose. Rated for 170 psi -65 to 350 degrees. I used barb style fittings and crimp style clamps, seems to be working great so far.

Nice.

Got looking around the farm, must be a regional/soil type thing on the heaving.

Our BIG gas meter/regulator for the corn dryer sits on a small concrete pad and the gas company left no provisions for heaving, lots of flow there with a 2” line coming in.

Two of the 10hp fans have add on heaters and again no provisions for heaving, the ones been there for over 30 years.

[U.P. Doug]

I believe you are right about the heaving. Our frost has been down over 6 feet here the last few winters and I noticed there are two slight banks by my driveway that look like drop offs in the early spring, I believe from me plowing the driveway and driving the frost down, the drive lifts. I have never seen anything like this before moving here. My pad lifted and slanted about 6 inches, returned to level in the spring.

[mlappin]

Must be the soils or something, once over 30 years ago Dad had problems with alfalfa heaving out of the soil, come spring the crowns of the plants were a foot above the ground and it’s never happened since.


Even our grain bins are on monolithic pads with a footer only a foot or 18” deep.

I poured the new sidewalk with pex in it about 15 years ago and still not a crack in it.

[juddspaintballs]

I went to NAPA and bought some 1" heater hose.  It's rated at 250ºF and 45 PSI.   
My 1" PEX with sharkbites was leaking at 3 of the 4 sharkbites after I shut down the boiler for a few days (65º+ outside), so I went ahead and took care of the problem.  I also switched from my Taco 007 stainless circulator to my Grundfos 26-99 on low. 

[U.P. Doug]

Looks good!

[Sloppy_Snood]

Solid-looking job Judds. 

[mlappin]

I went to NAPA and bought some 1" heater hose.  It's rated at 250ºF and 45 PSI.   
My 1" PEX with sharkbites was leaking at 3 of the 4 sharkbites after I shut down the boiler for a few days (65º+ outside), so I went ahead and took care of the problem.  I also switched from my Taco 007 stainless circulator to my Grundfos 26-99 on low. 

 

Did the farm show in Indy the last couple of days and handed out  a lot of business cards and got to thinking about this last night in the no tell motel and on mine if the I would have set my pumps up on opposite sides and IF I had enough Logstor I could have hooked the one that comes up on the right in the phot to the pumps on the left and vice versa it would take care of any potential movement by having the extra pex in a nice long loop from vertical to horizontal. Might not always be possible but would work on a 400 with all the extra room to work.

[schoppy]

I think the 1" heater hose sounds safer to me and it is usually braided as well as having higher temp ratings. I am going to see how my pex retracts in the spring when I shut down the boiler. If there is stress on my connections I will be putting in some heater hose to remedy it.

Last year I lost my antifreeze out of my old boiler when my generic shark bites leaked after shutting it down. Replaced them all with pex crimp fittings but still have the expansion/contraction of the pex issues so we will see at the end of the season if I need to add heater hose.   

[tinfoilhat2020]

next spring im putting all 3/4 copper pipe in where the pipe comes into the garage and starts its house loop....i hate how the pex looks, sagging when its hot and just not very pleasing to the eye. will cost me about $300 in copper pipe and fittings to do it all right but it will be worth it when its done i think.

[juddspaintballs]

Copper in the house sure is purdy.  I'll probably at least switch over to pex crimp fittings rather than Sharkbites inside the house because they are prone to leaking with large diameter PEX after it cools again.

[tinfoilhat2020]

only sharkbite fittings i have are on my plate exchanger and also my line temp gauges are sharkbite, been running with them for a few years and so far no issues when the lines cool. i always check them but so far so good

[fireboss]

I took my copper out of basement and replaced it with pex and used pipe straps to hang it ! Doesn't look all that bad! I thought I was having flow restrictions but it didn't make a difference what a waste of money! This year I switched my 40 plate heat exchanger for a 100 plate and see no difference! I guess the only thing left is a bigger pump!!