Bottletop Ref your 10757 What it amounts to is that OYS's competitors have nowhere to go ! Say what you like about PD ( and I've said plenty! ) the guy is a brilliant inventor. He recognised a way to replace metal seals with 'O' ring seals , which nobody (including myself , who was active in the business for over 20 years )saw . What we have got is the bigest advance in piping technology in 60 years - and the competitors can spend as much as they like and they still won't overtake it ! Now , at long last , the market seems to be recognising this and we now , hopefully , will get the share price increase the company deserves. :-)).......Ladron