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Zilmet Expansion Vessel check/topup

El_robbo1980 · 2024-04-17 11:39:58

Hi all I have a 22L expansion vessel and want to check the air pressure/top up if required. Theres a Schrader valve on top. Does the tank need to be isolated from the system to do this ie physically disconnect the pipe or can it be checked with pump off, tap open etc. Pre-charge is 3 bar but this is showing around 38psi…

17-04-2024 12:39pm

#1

El_robbo1980

Registered Users Posts: 116 ✭✭

Join Date: January 2012

Posts: 77

Hi all

I have a 22L expansion vessel and want to check the air pressure/top up if required. Theres a Schrader valve on top. Does the tank need to be isolated from the system to do this ie physically disconnect the pipe or can it be checked with pump off, tap open etc. Pre-charge is 3 bar but this is showing around 38psi

Thanks

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