N/A Moisture in PCP airguns

How many pcp owners go to all this extreme to keep Moisture out ?

I stress over it and use the large gold filter and an inline “ cigarette “ filter.

I’ll bet many, many pcp owners don’t give to much more thought to this. So I’ll ask again …. Have there been any incidents of heavy moisture in the airguns tank that caused a failure of any sort ??

I bought a used but beautiful on the outside M-Rod Gen .25 and after a few months it began leaking. I found severe corrosion in the area of the gauge block. I was able to source a new tube and had AGR cut it for a hybrid aluminum and steel so it all turned out well at a few extra $. But, yes, water in the guns can ruin them.

The YH compressor is best userd for pumping to a bottle. The CSX is best used for pumping direct to the rifle.

Some dive shops can fill to 4500 psi or close enough though scuba tanks are generally anywhere from 2100 to 3500 (rounding off) with 3000 psi being the most common and HP steels being 3450.
 
I bought a used but beautiful on the outside M-Rod Gen .25 and after a few months it began leaking. I found severe corrosion in the area of the gauge block. I was able to source a new tube and had AGR cut it for a hybrid aluminum and steel so it all turned out well at a few extra $. But, yes, water in the guns can ruin them.

The YH compressor is best userd for pumping to a bottle. The CSX is best used for pumping direct to the rifle.

Some dive shops can fill to 4500 psi or close enough though scuba tanks are generally anywhere from 2100 to 3500 (rounding off) with 3000 psi being the most common and HP steels being 3450.
Most dive shops in my area wont fill above 3200psi and know nothing about PCPs. I did find one years ago but the since close somewhat forcing me to find an alternative source. I live in probably the dive capital of the US.
 
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Most dive shops in my area wont fill above 3200psi and know nothing about PCPs. I did find one years ago but the since close somewhat forcing me to find an alternative source. I live in probably the dive capital of the US.

Yes, but the shop I most recently moonlighted at could and would as long as the cylinder is in hydro or certification life, has a current annual VIP and is a DOT cylinder. The problem(s) gets into the VIP and inspection standards applied to scba and PCP tanks for what is an industry practice for scuba (the VIP) and they often have no idea of what to inspect for those cylinders. So they will not.

We kept our bank around 5000 psi I recall. I could fill several large scuba tanks before the compressor would kick in. We had a membrane for Nitrox.
 
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Do you happen to recall whether the corrosion was outside of the O-rings or between them?

Both outside and between. Let me be clear, the corrosion that ended the life of the tube was just forward of and coincident with the O-ring on the HP side of the gage block. The corrosion finally undermined the sealing surface to the tube and it began to leak. I had some success with a hone to get a seal but there was enough pitting that it would eventually leak again. I guess as the O-ring became compressed.
 
Yes, but the shop I most recently moonlighted at could and would as long as the cylinder is in hydro or certification life, has a current annual VIP and is a DOT cylinder. The problem(s) gets into the VIP and inspection standards applied to scba and PCP tanks for what is an industry practice for scuba (the VIP) and they often have no idea of what to inspect for those cylinders. So they will not.

We kept our bank around 5000 psi I recall. I could fill several large scuba tanks before the compressor would kick in. We had a membrane for Nitrox.
yep ,mine is a luxfer carbon fiber bottle with hydro dates but still cant find a dive shop withing 30 miles that will fill above 3400. Fire departments if you know some one will. I just bought a high pressure breathable air compressor (Alkin w31 mariner) to solve my issue. Most HPA compressors are re-branded Chinese compressors marked up for max profit. Even the more expensive models seem to not last too long.
 
Yes, but the shop I most recently moonlighted at could and would as long as the cylinder is in hydro or certification life, has a current annual VIP and is a DOT cylinder. The problem(s) gets into the VIP and inspection standards applied to scba and PCP tanks for what is an industry practice for scuba (the VIP) and they often have no idea of what to inspect for those cylinders. So they will not.

We kept our bank around 5000 psi I recall. I could fill several large scuba tanks before the compressor would kick in. We had a membrane for Nitrox.
can I ask where you moonlight as I'm not aware of a lot of scuba in KS
 
Professionally prior to retirement last year I sold serviced and supplied large dental equipment. Dental drills (mostly) run on compressed air. Wet air is a big issue, both for hygiene (water is life) and miniature dental turbines spinning at up to one half million RPM. A little water is a big issue. A dental compressed air system supplies my home air pressure needs, the beauty being air dried to a -150 degree dew point, and 5 micron filtration feeds El Cheapo my Yong Heng knock off regulated down to 5-10 PSI at the pump inlet. I have the big gold filter and use it, I could likely eliminate it. Checked it after a bottle fill and several refills, like new inside zero evidence of moisture. No evidence of any moisture when bleeding down, none. Extra filtration never hurts justs wastes a little more air when bleeding down for disconnect. Hope I am not boring you all to death with El Cheapo as I'm uncertain how my setup could be duplicated inexpensively, like high end scuba compressors, the price of a dental air system will get your attention. In my experience desiccant dried air is superior to refrigerated dryer systems, a measure of that is the dewpoint of the compressed air product. I am a fan of desiccant type air drying systems, based on decades of experience where dry air really does matter. Desiccant drying is done just post compression prior to the storage tank hot wet air flows through a large tube of Silica gel, a secondary tank back flushes the desiccant stack with each pump up cycle. A similar system could be duplicated inexpensively to add on to a shop compressor.