Body, disc, diaphragm disc, O-ring and cover: Ductile iron, Plug, adaptor and air release nut: Brass, Body seat, bolt locking plate, washer bolt and nut: Stainless steel, Seat locking bolt and long bolt: Stainless steel grade 304, Stem: Stainless steel grade 303, Spring: Stainless steel grade 302, Washer, spring washer, nut and bolt: Stainless steel grade 316, Nameplate: Aluminium, Disc facing, O-ring and diaphragm: Rubber, Lifting nut and guide cover bolts: Steel, Guide cover: Brass/ bronze, Disc guide: Bronze and stainless steel.
Body, disc, diaphragm disc, O-ring and cover: Ductile iron, Plug, adaptor and air release nut: Brass, Body seat, bolt locking plate, washer bolt and nut: Stainless steel, Seat locking bolt and long bolt: Stainless steel grade 304, Stem: Stainless steel grade 303, Spring: Stainless steel grade 302, Washer, spring washer, nut and bolt: Stainless steel grade 316, Nameplate: Aluminium, Disc facing, O-ring and diaphragm: Rubber, Lifting nut and guide cover bolts: Steel, Guide cover: Brass/ bronze, Disc guide: Bronze and stainless steel.