Diaphragm valves type BIO SIERS...

 - water flow body (no retention) stainless steel Z3 CND 17.12.02
 - interior finishing Ra 3.2 (others on request)
 - Hemispheric seat
 - membrane in Elastomer moulded over a stainless steel insert
 - tips factory made on request
 - protection of the rod by flange hand-wheel used as a position indicator