double flange pneumatic butterfly valve

1) Design and manufacture: API609, ANSI B16.1 
2) Face to face dimensions: BS EN 558-1 
3) Test and inspection: API 598 
4) Install between flanges: ANSI 16.10(CLASS 125), DIN2501( PN10/16), BS4504(PN10/16)

Wafer Butterfly Valves Specifications: 
1) Size: NPS2"---48"(DN50---1200mm)
2) Class: PN10, PN16(125LB, 150LB )
3) Operation: Lever, gear, pneumatic or electric actuator  
4) Material: CAST IRON, DUCTILE IRON, CF8, CF8M 
5) Type: Wafer type, lugged type and flanged type, central line, NBR/EPDM/VITON/PTFE Seat