1.Material: 
Body:Ductile Iron 
Wedge:Ductile Iron+EPDM/NBR 
Stem:SS420   
Bonnet/Yoke:Ductile Iron 
2.Available Designing Standards: 
DIN3352/BS5163/SABS664/AWWA C515/C509 
Flange connection could be made according to customer's requirement. 
3.Norminal Diameter: DN40~DN600 
4.Norminal Pressure: PN10/PN16