I need to pass 3/4 inch PEX A pipe through a cinder block foundation wall, is drilling a 1 1/8 inch hole sufficient? Do I need to use an insulator around the pipe as it goes through the cinder block to prevent damage to the pipe from friction or movement?
3/4 inch PEX A pipe through Cinder Block
- Thread starter Aaronac8
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I’d sleeve it with 1” pex and drill a 1.25” hole through the wall. The OD of 1” pex is 1 1/8”
I like the idea of this, but the OD of 3/4 inch PEX A is at least 0.875 (possibly more with the compression ring) which would not fit in the 1 inch PEX A (ID of 0.875)
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Why would you put a joint inside the sleeve ? The Od of 3/4” pex is 7/8 and the ID of 1” pex is 1”. I do it occasionally and it works great.
Good luck to you
Thanks for your help Twowaxhack. I was not trying to be an ass, but when I referred to this page, the measurements did not make sense for placing the 3/4 inch PEX in the 1 inch PEX tube.
I am installing a Woodford Model 19 12", 3/4" Expansion PEX Inlet Anti-Siphon Wall Faucet w/ Metal Handle. It is going through 12 inch cinder block with 2 inch thick walls on either side. My 3/4 inch "T" off my main water line is very close to the cinder block, so the compression ring will need to be in the cinder block space. I plan on placing a 3/4 in. PEX Tubing Insulator Cap in the cinder block wall near the "T", so the PEX will not rub against the cinder block and the wall faucet will have a 2 inch extender, like this. Therefore, the compression ring will be just outside the 1 inch long 3/4 in. PEX Tubing Insulator Cap.
The reason I am doing all of this is because who ever installed my previous hose bib did not slant it downward and the shut off valve feeding this bib had a cracked bonnet nut.
Will post pictures when done.
I am installing a Woodford Model 19 12", 3/4" Expansion PEX Inlet Anti-Siphon Wall Faucet w/ Metal Handle. It is going through 12 inch cinder block with 2 inch thick walls on either side. My 3/4 inch "T" off my main water line is very close to the cinder block, so the compression ring will need to be in the cinder block space. I plan on placing a 3/4 in. PEX Tubing Insulator Cap in the cinder block wall near the "T", so the PEX will not rub against the cinder block and the wall faucet will have a 2 inch extender, like this. Therefore, the compression ring will be just outside the 1 inch long 3/4 in. PEX Tubing Insulator Cap.
The reason I am doing all of this is because who ever installed my previous hose bib did not slant it downward and the shut off valve feeding this bib had a cracked bonnet nut.
Will post pictures when done.
Regardless of what that website says……3/4” pex slips right into 1” pex easily with plenty of room. You’re correct that there wouldn’t be room for an expansion ring or crimp ring.
Sounds like you know what you want, good luck
