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чулуу бутлуурыг эхлүүлэхэд хэр их зардал хэрэгтэй вэ элс боловсруулах үйлдвэр vsi VSI Seat Temperature Ratings Cv Values Valve Sizing Coefficients USGPM 1 P 4 VALVE SOLUTIONS INCVSI Cv Values and Seat Ratings Cv is the number of gallons of water 60° F that can flow through a valve opening in one minute when there is a ...
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