(1) simple structure than the gate, manufacture and maintenance are more convenient.
(2) sealing surface is not easy to wear and abrasion, good sealing, opening and closing valve when the valve flap and no relative sliding between the sealing surface, and thus wear and abrasion are not serious, good sealing performance, long service life.
(3) open and close when the valve stroke is small, so small gate valve height ratio, but the structure is longer than the gate length.
(4) opening and closing torque, open and close more effort, opening and closing time principal.
(5) fluid resistance, the more the media path due to the valve body twists and turns, fluid resistance, power consumption.
(6) the direction of media flow nominal pressure PN ≤ 16MPa, the commonly used downstream, media from the valve under the direction of the upper class; nominal pressure PN ≥ 20MPa, the general use of counter-current, media from the valve on the downstream direction. To increase the seal performance. When used, the media can only be one-way valve flow, can not change the flow direction.
(7) fully open when the valve is often affected by erosion.
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