The shaft shall be hexagonal or square to ensure positive rotation of the disc and be totally sealed from exposure to the process liquid.
阀杆应该是六角形或方形,以确保阀瓣能够灵活旋转,并且完全密封,不会暴露在处理的液体里。
The shaft shall be hexagonal or square to ensure positive rotation of the disc and be totally sealed from exposure to the process liquid.
阀杆应该是六角形或方形,以确保阀瓣能够灵活旋转,并且完全密封,不会暴露在处理的液体里。
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