GTA

All Springer/NP/PCP Air Gun Discussion General => PCP/CO2/HPA Air Gun Gates "The Darkside" => Topic started by: GA_LeadHead on January 27, 2022, 05:33:06 PM

Title: FX Impact fill question
Post by: GA_LeadHead on January 27, 2022, 05:33:06 PM

Help a newbie out here.  Is it normal for the fill pressure to drop a little after filling directly from a compressor?
I fill my M3 to 250 bar and after a little while it drops to say, 240.  Is this a leak or due to temperature?

Title: Re: FX Impact fill question
Post by: dmeguy on January 27, 2022, 05:37:28 PM

If it holds steady after reaching settle temperature, it is most likely due to the heat of compression.

Title: Re: FX Impact fill question
Post by: csitas on January 27, 2022, 06:48:20 PM

Hey Lead, If you ever notice , when you pump up straight thru, by that I mean with no stopping, Your tube will get warm. Sometimes warmer than others. Your on the right thought that the heat is causing some drop in pressure afterward.
Also the faster you pump will raise more heat, also some moisture is possible.Slower is better.