Hello MacGyver1968, Thank you Mitch, I stand corrected Please Register or Log in to view the hidden image! "fount" . I have to go and look up Comic Sans and Wingdings. I find it funny the insults I receive for all is direct from Web library. Its the same books and data they rely upon, though just a few more than they have read. I think the cluey ones type any new name into the search bar before commenting. Dont post a theories. Nor I do any longer seek out the full range of pressures available to the workings. Mind you I reached that conclusion from having never invested in a safety valve. Cheers Peter Please Register or Log in to view the hidden image!