Size (mm): 200-1200
Pressure rating: 6-25 (bar)
Body Material: All Types of Ductile Cast Iron, Cast Steel, Stainless Steel, Copper Alloys
Disc Material: All Types of Ductile Cast Iron, Cast Steel, Stainless Steel, Copper Alloys
Application :
Usable in the oil rig industry, offshore, onshore& marine industry, gas station, etc. This type of wafer-type butterfly valve is applicable for isolating & regulating valves with seawater media & gas in a corrosion base atmosphere.
a) Ni-Al-Bz (ASTM B148) alloy is one of the best choices against corrosive seawater media. Some categories of stainless-steel materials are available too as per request.
Advantages:
Average corrosive rate: 2 mpy to 5 mpy.
Copper corrosion resistance ability & protective surface of Al2O3.
Corrosion resistance against mineral & organic acid bases.
b) Application of Ni-Cu (ASTM E 76) alloy
Parts in these valves that are in direct contact with seawater such as shafts, stems, screws & nuts should have suitable resistance against other imposed forces in addition to their resistance against corrosion. Ni-Cu alloy (MONEL) is the best choice for this application. Stainless steel alloy can be used upon request.
Advantages:
Very adopted & useful material to produce valves, pumps & ship propellers.
Protective surface & good mechanical properties against corrosion & erosion.
