FIELD: transport, packages.
SUBSTANCE: proposed threaded cover is intended for closing vessels used for transportation and storage of fluids. The cover disk abutting perpendicular to the disk periphery has an inner thread for stopping the vessel loading and/or unloading union. Aforesaid union represents a central threaded recess in the cover disk receiving the threaded tongue-and-groove plug. The proposed cover is furnished with an exhaust and plenum ventilation device and a clocking cap that covers aforesaid tongue-and-groove plug. The threaded cover allows releasing the dirt protection cap that completely covers the threaded cover. The protective cap features a squeezing bent outward edge designed to lock the cap on the ledges arranged on the threaded cover outer edge.
EFFECT: improved design of threaded cover with protective cap eliminating dirt accumulation on cover surface.
3 cl, 3 dwg
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