1.  Material:
1) valve body and bonnet: ductile iron ASTM-A-536,GGG500-7
2) DIS: grey iron/bronze,grey iron
Check valve
2.Features:
1) The check valves supplied are mainly used for preventing the water
    and steam medium from flowing backward
2) Material:
    a) Valve body and bonnet: ductile iron ASTM-A-536, GGG500-7
    b) Disc: grey iron/ bronze, grey iron or grey iron/ rubber
3) Size: 50 - 400mm/ 2" - 16"4) Pressure grade
    a) 250 PSI
    b) PN10
    c) PN16
5) Coating
    a) Fusion-bonded epoxy 200-250 microns inside and outside .
    b) Coating as per customers' requirement