Looking for a 7/8x14 Female to M18x1.5 Male

[ctshooter]

I would like to use the the TJ3 valve from my ExpertHPA guppy tank on a new 3L tank I bought, but it is tapped with M18x1.5. Is there an adapter available anywhere to convert my TJ3 valve with 7/8"x14 to screw into the M18x1.5 thread on the tank? The valving that came with tank is pretty low quality and it's hard to get a slow fill going.

 

[Humdinger]

I've done extensive research and don't think you will find what you're seeking. I doubt it exists. If It does, it will extend the neck length of your tank because the 7/8-14 female hole size is larger than the M18*1.5 threaded hole on your tank. The adapter couldn't be a bushing since the 7/8-14 tanks have a larger neck opening than the M18*1.5 neck size. I've searched on Aliexpress and U.S. Hydraulic fittings stores as well as on scuba forums. Good luck, but I think you'll need to find a better quality metric fill assembly rather than finding an adapter. Sorry.

 

[ctshooter]

Thanks for taking the time to look. I've been searching like crazy with no luck.

If you have any recommendation for a good quality metric fill station I'm listening. One of the big drawbacks to what I got is the turn knob has an awful safety mechanism that requires you to push in and turn - it's not very precise and sometimes doesn't catch - not good when you need to stop at a certain level below max and also fill slow.

 

[Eaglebeak]

Have you tried to remove the safety assembly? It is usually a simple process of removing the knob then removing the plastic catching bush and spring and reattaching the knob. If that is not possible, you might want to try something like this. I have one that I got from this supplier, it is easy to moderate and it works perfectly.https://www.aliexpress.com/item/4000026760786.html?spm=a2g0s.9042311.0.0.46c94c4dynsbSD 

 

[ctshooter]

Just removed the safety from the knob - 1,000x better. I'll give this a shot for a bit before spending more money. 

Thanks again.

 

[ctshooter]

Just wanted to update this - I finally found the adapter I was looking for. In another thread someone posted about a TalonP bottle adapter that PCP Tunes was selling.

https://www.pcptunes.com/talonp-valve-to-condor-tank-adapter.html?search=talonp

And this is the right part to convert 7/8-14 to M18x1.5.

 

[BigTinBoat]

Just wanted to update this - I finally found the adapter I was looking for. In another thread someone posted about a TalonP bottle adapter that PCP Tunes was selling.

https://www.pcptunes.com/talonp-valve-to-condor-tank-adapter.html?search=talonp

And this is the right part to convert 7/8-14 to M18x1.5.

Sorry but I'm pretty sure that thread is NOT 7/8-14, looks more like 5/8-18 to me.

 

[ctshooter]

Just wanted to update this - I finally found the adapter I was looking for. In another thread someone posted about a TalonP bottle adapter that PCP Tunes was selling.

https://www.pcptunes.com/talonp-valve-to-condor-tank-adapter.html?search=talonp

And this is the right part to convert 7/8-14 to M18x1.5.

Sorry but I'm pretty sure that thread is NOT 7/8-14, looks more like 5/8-18 to me.

You know what - you are right. I had a Guppy tank with the 7/8-14 and the 5/8-18 was purchased to put on a 45ci Ninja tank. I was originally looking for the 7/8-14 and was just going to move the valve but then I sold the guppy tank with the valve and had the paintball threaded one.

So yes, corrected accurately, thank you.