The hermetic valves with nominal bore DN 200, 300, 400, 500, 600, 700, 800, 1000, 1200, 1400 mm, intended for installation as shut-off devices on air pipelines of ventilation systems of nuclear power plants, belonging to the equipment of group C in accordance with the requirements of PNAE G-008 and safety class 3, in accordance with the requirements of PNAE G-01-011 (OPB) and NP-068-05. Classification designation of valves by safety class and purpose - 3H.
Hermetic valves with nominal bore DN 200, 400, 600, 1000, 1600 mm, intended for installation as shut-off devices on air ducts of ventilation systems of nuclear power plants, passing through the reactor compartment shell in accident localisation systems, belonging to equipment of group B according to the requirements of PNAE G-008 and safety class 2 according to the requirements of PNAE G-01-011 (OPB). Classification designation of valves by safety class and purpose - 2NL.
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