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Old 12-19-2012, 03:34 PM   #1
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Fil-Trol expansion tank


My new pressure relief valve leaks a little heating system water after the boiler shuts down. Now I am suspecting that the Fil-Trol expansion tank could be causing it. It's a model 110 tank & is pre charged for 12 psi with a max working pressure of 75 psi. I put an tire pressure gauge on the air valve & it reads 25 psi. Is the expansion tank causing my problem? How do I check it. If the tank is good & the relief valve which is brand new are ok, where else do I look.

Also, I'm thinking I should remove the pressure relief valve & install a water pressure gauge, run the system & see what the water pressure is. If it climbs to over 30psi, where can I look beside the expansion tank. Thanks for the help, please.

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Old 12-19-2012, 05:05 PM   #2
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Fil-Trol expansion tank


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Originally Posted by maddog1 View Post
My new pressure relief valve leaks a little heating system water after the boiler shuts down. Now I am suspecting that the Fil-Trol expansion tank could be causing it. It's a model 110 tank & is pre charged for 12 psi with a max working pressure of 75 psi. I put an tire pressure gauge on the air valve & it reads 25 psi. Is the expansion tank causing my problem? How do I check it. If the tank is good & the relief valve which is brand new are ok, where else do I look.

Also, I'm thinking I should remove the pressure relief valve & install a water pressure gauge, run the system & see what the water pressure is. If it climbs to over 30psi, where can I look beside the expansion tank. Thanks for the help, please.
WtF,... Why another thread,..?? This leads to confusion,...

This is ALL the SAME Problem man....

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Old 12-19-2012, 05:58 PM   #3
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Fil-Trol expansion tank


Bond- Yes your right. I did not mean to make things confusing with two threads on the same thing. My bad. I'm going to look at the gauge & post back to you on the other thread. Sorry for my error here. Guess I hit the panic button.
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