Duckbill check valve installation Straight-through lift check valve should be installed in horizontal piping, vertical lift check valve and bottom valve is usually installed in a vertical pipe on the road, and the media bottom-up flow.
Swing Check setting location restrictions usually installed in horizontal piping, but can also be installed in vertical or inclined pipe material pipeline.
Check valve should pay special attention to the direction of media flow, media should be the normal flow direction and the direction of the arrow indicated on the valve body is consistent, otherwise you will cut off the normal flow of media. At the end of the valve should be installed in the pump suction pipe at the bottom.
Check valve is closed, it will produce water hammer in pipeline pressure, will lead to serious valve, piping or equipment damage, especially for big mouth lines or high-pressure pipeline, it should cause those who use the height of valve Note. Straight-through lift check valve should be installed in horizontal piping, vertical lift check valve and bottom valve is usually installed in a vertical pipe on the road, and the media bottom-up flow.
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Nominal diameter(inch)
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Valve port stair(mm)
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Pipeline toughing
distance(B>mm)
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1/2 ~3/4
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15
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15
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1~1 1/4
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20
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20
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1 1/2~2 1/2
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25
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25
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3
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40
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40
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4
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50
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50
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6
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50
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50
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8
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50
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50
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10
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50
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50
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12~14
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100
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100
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16~20
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150
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150
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24~36
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200
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200
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42
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250
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250
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48~60
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300
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300
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72
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400
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400
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Note: Valve of DN800-1800(32”-72”) is with double Clamps. |
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