The structure of valve

As an opening and closing of valve, it is mainly composed of valve body, artifacts and cover for opening and closing of three parts. Seat on the valve body, valve stem drive valve opening and closing (disc) make lifting movement, the clutch disc and seat, the valve opening and closing.
Opening and closing mechanism by disc (also called valve disc, valve core), stem and drive device (hand wheel).Stem with trapezoid thread screw on the cover, the handwheel and disc fixed on both ends of stem up and down, turn the handwheel, the stem rises or falls, near or leave to drive the valve seat valve to close and open, disc and seat close match, the disc by the pressure of the valve stem compression on the seat, when the valve is fully closed position, the valve does not leak tight.

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