[ATTACH]82778[/ATTACH] I have a number of an old version of this valve in my 1963 house. Can one replace them (leaks in my case!) by unscrewing them at the arrow? If not, how do I replace them (they are in-line!). Thanks, Hans L[ATTACH]82779[/ATTACH]

I'm a total plumbing novice at age 70+, but I wanted to take a shot here at this: We have a jetted tub (not sure of the brand... there are no visible markings). It's 27 years old. The jets worked fine till recently. Now nothing, though the sound of the motor can be heard when the wall switch is turned on. A friend looked at the tub but couldn't locate a way to get at the motor. I called the prior owner and he verified there is no access to the motor unless someone removes the tub (it's a finished mater bath and there's a beautiful tile enclosure). My friend suggested we just live without the jets (my wife is not delighted with that option) because the only alternative is replacing the tub and the surrounding granite or whatever it is. (He said he could make an opening and then "close the opening with a vent but that the result would not be very attractive). Anyway, thought I'd take a shot here and see if anyone might have an alternative idea... Thank you for any advice! Alan