got a acecare tank from aliexpress.

look on Ebay for pcp fill stations.

https://www.pyramydair.com/s/a/Benjamin_300_DIN_Male_Adapter_Fill_Adapter_Fits_Benjamin_Carbon_Fiber_Tanks/4636

You should post a picture of your tank connection and describe the fitting on your rifle that you need to connect to.

Best fittings in England has what you need they deliver to the US. Have some one else verify what I recomend below I’m pretty sure I got it right based on the acecare tank I bought. M18 x1.5 tank thread you can also contact best for recommendation as you may need to add a blow out pressure release to comply with US Regs

for the tank you need valve

https://www.bestfittings.co.uk/shop/airgun-charging-equipment/cylinder-accessories/basic-diving-cylinder-valves/

then this
https://www.bestfittings.co.uk/shop/airgun-charging-equipment/charging-kits/din-charging-kits-230-300-bar/best-fittings-din-airgun-charging-kit-push-button-bleed/

and a quick release
https://www.bestfittings.co.uk/shop/quick-coupler-kits-and-parts/best-fittings-stainless-steel-quick-coupler-socket-standard-18-bsp/

"patp"and now i am having problems finding a hose that will connect to my air rifles. do i need a 300din adapter i read somewhere? called air tanks for sale and they said they could not help me. thanks

Click to expand...

You should have bought their fill station together with the tank, I did both - no problem at all as the fill station hose fitted with standard female fosters at both ends if you already have the valve for the tank, if not, you will need that too:
https://www.ebay.com/itm/300bar-4500psi-PCP-air-rifle-use-carbon-fiber-cylinder-refill-filling-adaptor-/232610521056?hash=item3628aadfe0

"anqgiap"

"patp"and now i am having problems finding a hose that will connect to my air rifles. do i need a 300din adapter i read somewhere? called air tanks for sale and they said they could not help me. thanks

Click to expand...

You should have bought their fill station together with the tank, I did both - no problem at all as the fill station hose fitted with standard female fosters at both ends if you already have the valve for the tank, if not, you will need that too:
https://www.ebay.com/itm/300bar-4500psi-PCP-air-rifle-use-carbon-fiber-cylinder-refill-filling-adaptor-/232610521056?hash=item3628aadfe0

Click to expand...

My tank was ordered with the above fill valve. It’s poor quality and on mine the quick connect fitting are a different size than standard and I had to replace all the foster components.

I guess I got lucky, I bought 2 sets fill station/tanks - big one first then little one about 4-month apart - both works well for me and still cheaper than buying one set here. Keep in mind they will not fill up to 4500 PSI as advertised, not an issue for me as I have no gun will fill up to 4500. At about 4300 PSI the safe valve starts bleeding; at least I know the valve is working as intended (30 MPA). I had one fill hose female foster started leaking, they (ACECARE) sent me a replacement for the whole set in 5-day (UPS expedite) - can't complain.

Ahhh, another "different" Foster size. I have a few of those. No Christmas card for whomever invented them!