Sealing disc or gasket– it can be part of a solenoid valve plunger, diaphragm, or be inside a seal gasket housing. This component provides the part that shuts the valve. The seal comes into contact with the medium being controlled. As a result, it should be of a premium material that can withstand corrosion. It also needs to be kept free from dirt, or the valve may not close fully. 
 

STARTER MOTOR Diaphragm- found in pilot operated solenoid valves, this part closes the main orifice from the action of pressure differences. Being a moving part, the diaphragm needs to be kept clean for the valve to operate as needed.

Armature tube- this is the hollow component acts as the plunger guide. Due to the tight clearances, any imperfections in the tube can cause the plunger to jam. Dirt can also affect the movement of the plunger, leading to valve damage due to the resulting and heat.
 

Conclusion

The different parts of a solenoid should be present for the valve to operate. They should also be installed correctly.

That’s because a missing components can cause a valve to malfunction. The same case with wrongly installed parts. Solenoid valves can be simple or complex assemblies and consist of many different parts.

The components explained here are the main ones- those that make up a typical solenoid valve.

Knowing what each of these main parts does improves your overview of these important devices.