Safety valves DN 15-150 , PN 16-40 Steam, water, compressed air, oil Check valves DN 15-200 , PN 16-40 Steam, water, oil Float valves DN 15-65 , PN 10 Liquids Siphon tubes DN 8-15 , PN 16-32 Liquids, steam, oil, etc Needle valves DN 6-25, PN 200-250 Liquids, steam, oil, etc