I was impressed when the Hill EC 3000 was previewed at the Shot Show 2020 by Air Venturi. I would like to understand about how it's built internally to have faith that it will be durable in the long term to justify it's $1,000 price. It appears to have some characteristics similar to the crankcase and piston layout of the Yong Heng compressor. I don't state this as a criticism but a design similarity. Specifically, it appears to use a single piston rod pushing two stages of compression through the same cylinder head with a double piston. I would expect this compression system is more robust than Yong Heng compressors but want to know if they seal using steel rings, synthetic polymer resin, or without rings like an Alpha Carette's high pressure piston. It appears to be well built and durable as it's $1,000 price tag should suggest.
That 20 BAR discrepancy of the Edgun digital gauge and the digital gauge on the EC 3000 is concerning. One of those gauges is substantially inaccurate. I would be displeased if it's the compressor. I would test it using a gauge on a different pcp to find out which gauge is giving incorrect readings. Good luck with your new EC 3000. Please keep us updated on its performance over time. Most of the direct fill pcp compressors do not impress me with their durability. If the EC 3000 is reliable and durable, it could give someone direct fills and eliminate the expense of a $750+ tank set that many vendors are selling. IMO, none of the 12 volt portable direct fill compressors from China seem reliable or durable and break down quickly. Their high short term failure rate means they aren't worth the money when they aren't dependable. The last thing anyone needs is to be afraid that their compressor is about to fail every time it is used.