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Swing check valves according to TR 3740-002-15365247-2004.

Structural designs: lifting and rotary valves.
Installation position of the check valve: only on horizontal pipeline sections with the medium flow direction “under the plate” so that the flow direction coincides with an arrow drawn on the body, provided that the nut (cover) is only directed upwards.
Installation position of the swing check valve: the swing check valves may be installed on horizontal sections with the cover upwards and on the vertical pipeline sections with the medium direction from the bottom upwards under the plate.
Pipeline connection: welded connection.
Gate sealability: according to class А GOST 9544-2015.
Climatic version: У, УХЛ, ХЛ, Т according to GOST 15150-69.
Placement category: 1, 2, 3 according to GOST 15150-69.