[Markus K.]

Hi folks,

yes, I´m using Meinhardt Valves (the big Mega Blocks - i´ve to handle about 2 liters per minute). He don´t support an online shop and he makes not as many as he could sell. Because he don´t need to, it´s not his business, it´s his hobby.
Premacon Valves are fabricated by Jung Fluid. But I can´t tell wether those are open or closed center. I simply would ask premacon via mail.