Easier to replace the entire spigot with a frost proof type with vacuum breaker on the top. Supplyhouse dot com has bluefin brand for under $20 bucks for the 8" and 6".
What kind of piping do you have? The boiler condensate is corrosive. If you have any type of cast iron waste pipes it could corrode them. They make inline neutralizer devices if you think you might have iron pipe downstream.
Probably same material as the one that it came with.
The cartridge is most likely the 35mm one that seems to be the kitchen faucet size the Chinese faucets all use.
The 40mm cartridge seems to be for the Chinese shower valves.
I could be wrong so measure the diameter of the cartridge.
I have 3...
Check the links I put above to the stem and cartridges that look like they will fit on amazon. Those off brands use off the shelf parts for the valving that is why they are able to sell them at lower prices. If you search you can find them on ebay, amazon, and cheapest cartridges are on Temu and...
What is below the toilet in the basement that would prevent you from dropping straight down with the 3" and tie everything together in the ceiling of the basement?
Can you set the flange exactly where you need it then drop straight down into the basement? Under the toilet flange put a 3 x 2 side inlet fitting that picks up the shower and lav?
PEX is most economical solution but if you want to stay with copper you could use those approx 1 foot long copper corrugated flex connectors that you sweat on.
Can you build new studio similar to what you wanted and take the axles off the old mobile home somehow put underneath to technically make a new building a mobile home in the eyes of the tax man?
The way they work is all based on the return air temp it senses on indoor head unit.
Mine the indoor fan runs all the time (unless you put it on Eco mode).
Then you can hear when the logic sends more refrigerant to modulate the system.
Outside is the metering valve they use a EEV electronic...
This seller on Ebay has several Cool Only mini splits but none are 6k. I never heard of the brands he sells but they all seem to be coming from 3 factories in China now and they slap different stickers on the sheet metal case.
He has a system called Premium 12k cooling only with 11 ft install...