Metal ball valve insulation cover

The utility model relates to an insulation cover, metal ball valve insulation cover especially, its parcel be at metal ball valve surface, including first heat preservation and second heat preservation, first heat preservation is located second heat preservation the inside, first heat preservation is formed by the concatenation of first cubic insulation material, be equipped with protruding couple on each cubic insulation material's the side, be equipped with concave hook groove on its relative side, adjacent two cubic insulation material link to each other with the slot combination of concave hook through protruding couple, the cubic insulation material's of second of second heat preservation internal surface has the toper protruding, the toper is protruding to be cross, is located the cubic insulation material internal surface of second, the toper arch is inserted in two cubic insulation material of the first heat preservation surface concatenation clearance.