HD Kugelhahn UF DN100 DP100 m. Teleskopverlängerung

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The subject of the procurement is the manufacture, testing, documentation and delivery of fully welded ball valves of pressure class DP100 for gas transmission pipelines in nominal sizes DN 100, DN 200, DN 300 and DN 400 for below-ground installation. The ball valves must be suitable for use in underground gas transmission infrastructure as well as for hydrogen applications and must have a telescopable extension of the functional lines and the actuation with a minimum length of 2.0 m. The design is to be arranged such that a minimum pipe cover of 1.0 m is guaranteed and that all lubrication lines, draining lines and position indicators can be accommodated within a street cap of size 4 according to DIN 3581. The ball valves are to be designed as a fully welded construction with a purely metallic sealing system. The ball and the seat rings are to be designed with a tungsten carbide coating (TCC) with a minimum coating thickness of 250 µm. In addition, a sealing medium system with check valves is to be provided. The ball valves must be equipped with lubrication and draining lines routed upwards, an emergency stuffing box seal and a gearbox located underneath. Furthermore, a housing…

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