You should have an isolating valve just before the tank, water by-laws say so but not always the case, if you don't try fitting one, then "throttle" it down a bit, alternatively fit a part 2 ballvalve!!
Result of Planet Rock listeners poll:-
3)Guns n Roses/Sweet child o mine
2)Led Zeppelin/Whole lotta love
1)Deep Purple/Smoke on the water
Purple "walked it " as i confidently predicted, smug as i am :twisted: :twisted: