stillsteamn
New Member
Hi, thanks for allowing me into the forum. My old washing machine valves are stuck wide open. They are old gate valves, shown in the picture. I want to replace them with these new 1/4-turn valves. On the old valves, is the threaded joint that I marked in red the water-tight seal? Or just for mechanically mounting these valves into the box? My house water supply pipes are 1/2" copper tubing. The replacement valves I found are 1/2" straight threads, not tapered. I now suspect these 1/2" straight threads are the correct threads but they are just to mechanically hold the valve into the box. I suspect I need to open up my drywall, cut the old copper tubing, and solder in these new valves. I already confirmed that 1/2" copper tubing fits nicely into the inside of the long threaded input side of these valves for soldering purposes.
Originally I was thinking the box must have 1/2" tapered threads for a water-tight seal of the valve to the box, but now I don't know. I might have to cut a hold in the drywall and take a peak, but your experienced comments will help.
If my old valves are soldered onto copper tubing, I could have really messed things up had I put a pipe wrench onto these old valves and started cranking.
Thanks!
Originally I was thinking the box must have 1/2" tapered threads for a water-tight seal of the valve to the box, but now I don't know. I might have to cut a hold in the drywall and take a peak, but your experienced comments will help.
If my old valves are soldered onto copper tubing, I could have really messed things up had I put a pipe wrench onto these old valves and started cranking.
Thanks!