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The ball valves is an opening and closing gate. The movement direction of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. The gate valve is sealed by the contact between the valve seat and the ...
Стандарт хуурамч хавхлага болон цутгамал хавхлагуудын …
What are the differences between standard forged valves and cast valves? Automatic sprinkler systems — Part 6: GB/T 12225-2018 Technical requirements for copper alloy castings GB/T 35842-2018 Technical requirements for prefabricated directly buried thermal insulation valves for heating in...