Variable Capacity Lid Pump

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artooks

Junior
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Hi,

I have a sansone tank which came with a variable lid and a pump, I first did a leakage test which went ok, it also have a vale just before the entrance of the lid gasket for double protection, so I did as instructed opened the valve first unwind the pump valve, inflated the gasket up to 0.8 bar and shut of both valves and next day when I check it I saw that it slightly went down only 1 tick from 0.8 bar to 0.78 bar but the gasket is ok when I check it with my thumb, is this a normal thing ? could this be a misreading since the main valve on the gasket is shut and therefore the pump only reading the pressure in the silicone hose I guess what do you think ? How should I check it ?
 

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artooks

Junior
Joined
Jul 29, 2019
Messages
26
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4
Anyone have an opinion on this ? there is no leak but somehow it starts to drop very slowly so trying to understand why it happens.
 

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