What Is The Meaning Of The Valve Arrow On The Pvc True Union Ball Valve?

The arrow of PVC true union ball valve is to bear pressure direction, rather than referring to the pipeline medium flow direction. With two-way sealing function of the valve can not identify the indication of the arrow. You can also mark the arrow, because the valve arrow is the direction of the proposed pressure. Left and right or up and down these two directions will have a direction is better.

The arrow of PVC true union ball valve marked on the valve body indicates the direction of the valve pressure, usually by the engineering and installation company as the medium flow direction marking the wrong installation to produce leakage or even cause pipeline accidents.

Pressure bearing direction means that the valve is applied to the pipeline conditions after the closure of the state, the direction of the valve body arrow for the direction of the proposed pressure. such as if installed incorrectly, there may be a leakage failure phenomenon of the valve is not closed tightly. Soft seal ball valve is usually a two-way seal, usually not marked with an arrow. Metal hard seal ball valve can do two-way seal, but there will still be a direction of the sealing performance is still better, so there will be marked with an arrow, which refers to the direction of the proposed valve pressure.

The arrows of PVC true union ball valve in different locations in the pipeline, the direction of the arrow and the medium flow are not the same. such as the pump in the pump room at the outlet end of the pump, the valve body arrow and the medium flow is the opposite. such as in the pump at the inlet end of the pump, then the arrow and the medium flow is the same. such as the installation of the main line, the arrow is generally compliant with the medium flow, etc. It depending on the specific conditions and the location of the installation and then determined.