Liquid silicone

In a hot runner system, the needle valve series usually does not include the following components:

1. Hot runner controller: The hot runner controller is the core control equipment of the hot runner system, used to monitor and control the temperature and operating status of the hot runner. It is usually a standalone device rather than a part of a needle valve.

2. Hot runner heater: A hot runner heater is a device used to heat the hot runner to maintain the molten state of plastic. It is usually a standalone component rather than a part of a needle valve.

3. Temperature sensor: The temperature sensor is used to monitor the temperature of the hot runner and send information to the hot runner controller. These sensors are typically installed at various locations in the hot runner system, rather than on needle valves.

4. Oil system: The hot runner system usually requires the use of lubricating oil or heat transfer oil to maintain the normal operation of the needle valve and hot runner. The oil system includes components such as oil pumps, fuel tanks, oil pipes, and filters. These components are usually not part of the needle valve series.

It should be noted that the specific configuration and components may vary in different hot runner systems. Therefore, when using or understanding a specific hot runner system, it is necessary to refer to relevant technical instructions and product documentation.