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Reply to "Suggestions or advice for pressure and expansion tank caps"

I have been using matching 16 pound caps by Stant along with a modification to the cap for the overflow tank.  The modification is easy.  Simply remove the rubber from the lower seal and it stops working as a pressure cap and becomes only a sealing cap.  In the photos below the swirl tank cap is on the left and the overflow tank cap without the lower seal is on the right.  The second photo shows that they look identical from the top.  Be careful to install them on the correct tank.

My tanks both have US filler necks.  The Euro filler necks can be replaced with the US version.

C390547F-1F5B-4A34-8CE7-1729B9E404FD_1_201_aBC0E9AE9-513B-4AD3-957D-ABBBFE79B895_1_201_a

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