Needing a inline bleeder valve

If you don't mind buying two 1/4 to 1/8 NPT adapters, you might want to try searching ebay for 1/4 inch NPT bleed valve (handles 6,000 psi)

https://www.ebay.com/itm/Stainless-Steel-Bleed-Valve-1-4-NPT-Inline-SCBA-Paintball-Scuba-A-B1110/162943819671?hash=item25f0355f97:g:dLkAAOSwv0tVCvQH:rk:6f:0

From a design perspective, my sense is that the engineering problems to make a bleed valve only 1/8 inch would be cost prohibitive and probably fraught with safety and reliability issues.

Happy hunting, Michael

 I got this one, added a 1/4" ss tee and then some ss 1/4 - 1/8 ss adapters.

https://www.ebay.com/itm/Stainless-Steel-5000psi-Bleed-Valve-Paintball-SCUBA-SCBA-Air-Rifle-1-4-NPT-USA/392153425441?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

https://www.ebay.com/itm/1-4-Male-x-1-8-Female-Thread-Reducer-Bushing-Pipe-Fitting-SS-304-NPT-NEW/271442746435?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

https://www.ebay.com/itm/HFS-R-1-4-Npt-Tee-Fitting-Female-Fnpt-3-Way-Tee-Stainless/272758655126?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

 I don't see a pressure rating for the Tee or the reducer bushing. Use at your own risk. And even if they have a pressure rating do you trust every vendor on eBay to tell the truth?