Hello I will help you with your question,
Is this the valve that the vacuum lines go to?
Help me find which valve you need help with and I will describe the connection
That is the Evap Purge Solenoid shown in the diagram below that allows engine vacuum to reach the charcoal canister when the operating conditions are correct. It has a vent line that goes to a filter and a line to the intake manifold. The other line goes to the charcoal canister so that the gasoline vapors can be drawn off and burned in the engine instead of being vented to the atmosphere.
The top line has the TEE as shown by the wide portion in the diagram
Let me know if you have further questions
You can leave the filter off, it just keeps foriegn matter and bugs out. If the port got clogged the valve may not close as it could not vent. If it hangs open it will act as a vacuum leak at idle and slightly off idle
Thank you for using JA!!