Seeking tips on replacing 3/4" cold riser with 1" riser

Branimal

Member
Messages
49
Reaction score
0
Points
6
Location
NYC
I'm doing some renovations on an old 3-family building. The main trunk runs horizontally toward the back of the building. Halfway thru the building a riser tees off from 1" down to 3/4" with an old gate valve in between. That 3/4" riser tees off on every floor. The knob on the gate valve is stuck and I don't want to try to turn it forcefully. Looks like everything is brass.

I'm going to shut off the water at the front of the building, then check to see if its holding. There's a 1/2" copper line off the 3/4" line pictured with a sharkbite cap on it. If that works I'll cut the 3/4" riser and try to wrench off the stub. Then try to wrench off the gate valve and nipple.

Then replace with 1" copper teeing off to 3/4 for each floors' branch line.

The pipes don't appear to be corroded. That's plaster dust sitting on the tee.

I'll have a 1" cap and plug on hand if things go south.

Any tips?
 

Attachments

  • IMG_5183.JPG
    IMG_5183.JPG
    132.2 KB · Views: 44
Top
Hey, wait a minute.

This is awkward, but...

It looks like you're using an ad blocker. We get it, but (1) terrylove.com can't live without ads, and (2) ad blockers can cause issues with videos and comments. If you'd like to support the site, please allow ads.

If any particular ad is your REASON for blocking ads, please let us know. We might be able to do something about it. Thanks.
I've Disabled AdBlock    No Thanks