A question about air cylinder filling and pressure

[Guest]

Hello,

I was wondering what pressure you usually pump your pistol air cylinders to. To the maximum indicated on the cylinder? As a follow up I have another question.

I have an Axsor hand pump and after going up to about 100 psi, with each stroke the gauge needle barely moves forward (towards 150/200). By barely I mean barely. Also the backpressure increases significantly. Is it normal or maybe the pump is malfunctioning or maybe I am doing something wrong? I have checked, the sealing is tight so air isn't escaping in the process.

Best regards,

Sergio

[Richard H]

Hello,

I was wondering what pressure you usually pump your pistol air cylinders to. To the maximum indicated on the cylinder? As a follow up I have another question.

I have an Axsor hand pump and after going up to about 100 psi, with each stroke the gauge needle barely moves forward (towards 150/200). By barely I mean barely. Also the backpressure increases significantly. Is it normal or maybe the pump is malfunctioning or maybe I am doing something wrong? I have checked, the sealing is tight so air isn't escaping in the process.

Best regards,

Sergio

I too have an Axsor and yes it does get more difficult because you are compressing the air to 200 bar. I usually fill to the full mark (200 bar approx. 3000psi). I think it use to take about 120-150 strokes to fill a LP10 cylinder (usually use a scuba tank now and only top off when the tank gets low).

[Guest]

Thank you Richard, next time I fill it up, I'll check the number of strokes that is necessary.