Tuning Firehouse SCBA valve getting wonky _ Help!

[DanGunner]

I have several Drager carbon fiber 88 cu ft I believe, 4500 psi bottles causing me a problem. Recently I am unable to slowly open them to fill my guns. They are not releasing air until I turn the knob(existing CGA347 on the tank) farther than I had to before, and then release air WAY to quickly. I have to be very careful and be ready to turn the knob towards closed, in an attempt to slowly fill them. I have the cheap ebay filling adapter on them, always worked fine (threads on to the tanks cga347 valve on top).

Solutions I've come up with:

1. Joe Brancato's $489 regulator...ouch

2. Joe's $229 each TJ3 Dual gauge valve...X 5 tanks...ouch

3. Ebay $50-60 fill adapter that replaces entire part that threads into the tank, like Joes TJ3, hopefully its valve is more precise, BUT I can't find one in 7/8 thread for my tanks.

Anyone have any suggestions, or ways you've overcome this problem?

Thank you,

Dan

PS: it may take a day or so for me to reply...work sucks

 

[athomas56]

I have one of these on my tank:Air Venturi HPA Jubilee Valve, 7/8 UNF, 4500 PSI | Pyramyd Air

 

[dizzums]

i built this to make fills alot more controllable .. 40$ for the valve on ebay then several fittings and a gauge ..its real handy, i use it every time .. i can just leave it hooked up to the bottle and the bottle on till im done shooting ...

 

[Brent]

That looks like a nice set up dizzums. I don't have any tanks yet, just direct filling off a hill 3000 at the moment but I will definitely dm you if I get a tank.

 

[Gerry52]

I can get you replacement valves (gone over & recertified) for $45. PM me if you want. They are original Scott, MSA, Drager type. I'll be going to my distributor next week. 

Gerry 

 

[Long_Gun_Dallas]

This is what I use. Always gives me a steady, safe fill.

https://www.bestfittings.co.uk/shop/airgun-charging-equipment/cylinder-accessories/cylinder-valves/airgun-charging-valves/bisley-air-gun-charging-valves-300bar-m18-x-1-5-ideal-for-carbon-fibre-cylinders/

Though, also using an SCBA tank, I have to use a thread adapter. But can't recall what the tank thread pitch is

 

[Aimright]

I ended up partially rebuilding the valve on my Drager, I posted my repair in this thread, several posts down: https://www.airgunnation.com/topic/anyone-ever-have-a-tank-leak-not-gauge/#post-838695 Gerry52’s offer above at $45 sounds like a nice deal to me, these scba valves are pretty stout overall.

 

[dapackers]

I've been using this $55 7/8-14 valve from Amazon on my Scott tank for about 6 months now and have been happy with it 

https://www.amazon.com/dp/B088P56CW1/ref=cm_sw_r_apan_glt_fabc_DKEBB70CG4A6JH0D9HY9?_encoding=UTF8&psc=1

 

[DanGunner]

Thank you guys for all the answers! 

I should have no problem getting my problem fixed. 

Dan

 

[KatoKevin454]

Sounds like the Delrin seal is getting worn out, you could replace the seal, but I doubt if you could buy one, you most likely have to make it yourself, you could make a restrictor from brass bar stock and fit it in the pipe fitting on the manifold, you would have to play with the sealing so it only allows small amounts of air to bypass, or pay big money for a new manifold with built in restrictor.