Design Seat valve with diaphragm sealing Material Body : GG 25 Stainless steel 1.4581 ( DN 15 - DN 50) Stainless steel 1.4408 ( DN 65 - DN 100) GS-C25 on request Internal parts : Brass, Stainless steal Sealing : NBR ( FKM, EPDM, PTFE) Connection Flange DN 15 up to DN 125 PN 16 Drilled Flange PN 16 - DN 65 will be delivered in 4-hole execution ! Media Gases and liquids up to 22 mm2/ s