Fill station for scba tank

I guess that depends on what tank you are connecting it to. You did not say 7/8-14 UNF, 5/8x18 UNF or M18x1.5 Nor did you say if you wanted something inexpensive

https://www.amazon.com/IORMAN-Paintball-Compressed-Pressure-Charging/dp/B081YRD4PH?ref_=s9_apbd_orecs_hd_bw_bEdaB&pf_rd_r=YBP5E1N0DPJBG2PXS21G&pf_rd_p=25e9f2e3-ffa0-5d71-a946-a45258cc7677&pf_rd_s=merchandised-search-10&pf_rd_t=BROWSE&pf_rd_i=3488751



or something a bit better like this slow fill valve.

http://experthpa.com/cart/cart.php?m=product_detail&p=112

I have one of these they are excellent and one does not have to worry about an overfill so much because they fill nice and slow. You have the option of a two gauge unit as well so you know both what is in the tank and what you are putting into the gun at a glance.



Doubt you have the smallish paintball style tanks 5/8x18 UNF but this is what I use on them. It is also a very nice slow fill valve as well.

https://www.amazon.com/Ninja-EZ-PCP-Fill-Valve/dp/B084KJ59V2?ref_=s9_apbd_obs_hd_bw_bEdaB&pf_rd_r=NQ0V1182NX6BRKSHYFZJ&pf_rd_p=b3fbe69f-c53b-5861-83cf-32826ee82e3a&pf_rd_s=merchandised-search-10&pf_rd_t=BROWSE&pf_rd_i=3488751