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What does the arrow on the valve mean? Don't get it wrong again!

The direction of the arrow marked on the valve body indicates the pressure direction of the valve. It is generally used by engineering...

The direction of the arrow marked on the valve body indicates the pressure direction of the valve. It is generally used by engineering installation companies as a symbol of the flow direction of the medium. Improper installation may cause leakage or even pipeline accidents.

The pressure direction refers to the closed state of the valve after it is applied to the pipeline working conditions. The direction of the arrow on the valve body is the recommended direction to receive pressure. If it is installed incorrectly, the valve may not be tightly closed and leakage may occur. Chaoda's soft-sealed ball valve is generally bidirectionally sealed, and arrows are generally not marked. Metal hard-sealed ball valves can achieve bidirectional sealing, but there is still one direction where the sealing function is better, so there will also be an arrow marked. This is the recommended valve pressure direction. You can consult the customer's opinion first.

The hard-sealed butterfly valve with a marked arrow has different arrow directions and medium flow directions at different positions in the pipeline. For example, at the water outlet of the water pump in the pump room, the arrow on the valve body is opposite to the medium flow direction. At the water inlet of the water pump, the arrow and the medium flow direction are the same. If it is installed on the main pipeline, the arrow generally follows the medium flow direction, etc. The specific direction depends on the working conditions and installation position.


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