I believe mine is a centre flag h20 or something along those lines not bad it cost about 50 quid new and have used it for over a year now. The Ano has faded and the fill nipple needs replacing and the recharge rate is not that great but its is consistant and for 50 quid not really going to argue
Any one tried the Dye or Worr gas preset yet
I dont think i would every go back to a adjustable unless i had to now