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How Does Top of Lippert 360 Siphon RV Vent Cap Attach to Base  

Updated 12/15/2025 | Published 11/17/2024

Question:

I have this vent installed on a new RV. I need to remove to check the vent pipe connection. Does the top part of the vent remove from the screwed down base. I so how? Is it a snap fit?

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Expert Reply:

Hey Thomas, when you install the Lippert 360 Siphon RV Vent Cap for Black Water Holding Tanks # LC389380 the top attaches to the base with a sealant. So it's more or less a friction fit that you use a sealant to completely attach.

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Jameson C
Jameson C. profile picture
Etrailer Expert

Jameson C.

12/15/2025

Hey Thomas, how did it go getting the top of your Lippert 360 Siphon vent cap loose from the base? Your update could make it easier for the next person trying to check their vent pipe connection.

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