NOVELTY - Closure profile (1) of the cover of a biogas tank, comprises a profile rail (2) having a two ends of a base and legs formed substantially in U-shaped cross section manner and extending through the base, where at the end of at least one leg (5) an angled wing adjoins outwardly and extends downwardly to the plane of the base (4) directed; a pressurized fluid hose (3) longitudinally extending and chargeable within the profile rail; and a closure strip extending between the opening of the profiled rail via two free ends of the legs. The closure strip has an angled cross-section with a plug shank.    USE - The closure profile is used for the cover of a biogas tank.    ADVANTAGE - The closure profile has multifunctional application, thus it is used for different designs of biogas tank.    DETAILED DESCRIPTION - Closure profile (1) of the cover of a biogas tank, comprises a profile rail (2) having a two ends of a base and legs formed substantially in U-shaped cross section manner and extending through the base, where at the end of at least one leg (5) an angled wing adjoins outwardly and extends downwardly to the plane of the base (4) directed; a pressurized fluid hose (3) longitudinally extending and chargeable within the profile rail; and a closure strip extending between the opening of the profiled rail via two free ends of the legs. The closure strip has an angled cross-section with a plug shank, which is inserted between the hose and a first leg of the profiled rail, and has a covering arm extending to the second leg and at least partially covers between the openings of the profiled rail via the two free ends of the legs. The closure holders are provided which are arranged along the rail spaced from each other, and each comprises a shutter bar against the hose suppressing clamping tab. An INDEPENDENT CLAIM is also included for an arrangement of the closure profile comprising profile rail with a sideways open cross-section, which is mounted such that the base is in an upright position.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic longitudinal view of the closure profile.    Closure profile (1)    Profile rail (2)    Pressurized fluid hose (3)    Base (4)    Leg (5)