1. Failing to consider later installation
In most cases, installers know that there is no need to connect everything in a concrete room without the possibility of removing these parts at some point in the future. If all parts are tightly screwed together with no gap, it is very difficult to separate them, whether they are groove-type connectors, flange connectors, or pipe connectors of a pneumatic 2-way 2-position solenoid valve. In the future, some parts may need to be cleaned; although this usually does not attract the installer's attention, it is very important to owners and engineers.
2. Horizontal installation of a concentric reducer
This may seem picky, but it also needs attention. An eccentric reducer can be installed horizontally. The reducer of the liquid-use normally open solenoid valve is vertical. In some applications, it needs to be installed in the horizontal direction using an eccentric reducer, but this usually involves cost: a concentric reducer is inexpensive.
3. A valve hole that cannot drain
All the rooms are wet. Even during the startup of the valve, when the gas inside the valve bonnet is discharged, there will be places where water drips onto the ground. In industry, a flooded gate will be found at any time, but there is no reason for it (unless naturally that area is flooded, which will bring you even more trouble). If the cylinder 5-position one-way solenoid valve has no drainage pipe, and assuming there is power, a simple sewage pump can be used. Without power, a float valve with a jet port will effectively keep it dry.
4. Failure to remove air
As the air pressure decreases, gas will flow out of the suspended matter and be transported into the pipeline, causing a fault downstream of the valve. A simple exhaust valve can prevent the generation of any gas and can also prevent problems. Installing an exhaust valve at the front end of the control valve is also useful, because air in the pilot line can cause changes. Why not discharge the gas before it reaches the valve?
5. Reserved plug
This may be a minor issue, but keeping a connection point in the upper and lower chambers of the pressure regulator is always very useful. This arrangement facilitates future maintenance, whether connecting a water pipe, adding a pressure regulating valve, or adding a SCADA pressure sensor. At the design stage, the cost of adding accessories is very low, which significantly improves future use. This makes maintenance work more difficult, because everything is coated with paint, so it is impossible to read the nameplate or make adjustments.

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