PPG mini safety valve G 1/4", 30 - 60 bar adjustable. Materials: Body: stainless steel 1.4305, spring: 1.4310, seal: FKM Temperature range: -10°C to +180°C Media: compressed air and other non-toxic, non-flammable gases, free blowing off material 1.4305 Thread G 1/4 Response pressure [bar] 30 - 60 Blow-off capacity [l/min] up to 3000