I have a leaking shut-off valve that goes to the outside (water hose connection). There is no other shut-off in front of this valve. To work on it I have to turn water to the whole house off. It seems to me I could get the "inside" parts - valve stem with seals etc. and do not have to replace the body that's soldered. But I don't know what type off valve it is - maybe gate valve? Could you identify valve type and point to parts to get for repair. Possibly cross section picture of valve and in...