Body: Cast Iron/Ductile Iron

Bonnet: Cast Iron/Ductile Iron

Disc:Cast Iron/Ductile Iron

Disc seat ring: Brass/Bronze/Stainless Steel/Rubber

Body seat ring: Brass/Bronze/Stainless Steel

Stem: Stainless Steel/Brass

Face to Face:DIN3202-F1

Flange drilling: DIN2501