To get email notification when someone adds to a thread you're following, click on the star in the thread's header and it will turn yellow; click again to turn it off. To edit your profile, click on the gear.
The Wall has a powerful search engine that will go all the way back to 2002. Use "quotation marks" around multiple-word searches. RIGHT-CLICK on the results and choose Open Link In New Window so you'll be able to get back to your results. Happy searching!
In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Has anyone seen threads like this on old steam systems? I've been in the trade for 45 years and this is new to me. Look at the pic - it is a shallow fine thread like on a lav pop-up tail piece, but is tapered. I have laid a standard thread next to it for reference. Regular 1" and 1-1/4" radiator valves are screwed onto these threads with little damage. I needed to extended the riser due to a higher floor and planned on using an extension piece. You all know what kind of job I got into replacing the riser. I was able to screw the old valve onto a regular pipe thread. Why the fine thread? The other end of the riser has a standard thread. This one pipe system is probably approaching a century of service.