Well, I have the same problem, but your approach did not fix it.
Basically this means the FX fitting is not working at all....
What did Best Fittings say?
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FX Dreamline Compact Tactical .22
- Thread starter Nutcracker
- Start date
Well, I have the same problem, but your approach did not fix it.
Basically this means the FX fitting is not working at all....
What did Best Fittings say?
Yea, well update to the update... It didn't fix mine either! It held air over night, but when I put it back on the DTC last night and tried to remove it again, all the air leaked back out! I was able to remove the valve and cleaned it up, but I noticed a lot of what appears to be chipped metal around the opening where the poppet stems goes through, and this is the surface the poppet needs to seal against.
This isn't the greatest picture because it's taken with my phone and it's almost impossible to get it to focus on the bottom of the inside of the valve. In any event, Richard from Best Fittings did respond and we have been swapping e-mails and pictures. He is looking into the cause and a solution, but said he would be sending me a new valve next week. Hopefully, they will get it resolved and won't have these problems in the future. I have to wonder if they may have just received a bad batch of valves.
This isn't the greatest picture because it's taken with my phone and it's almost impossible to get it to focus on the bottom of the inside of the valve. In any event, Richard from Best Fittings did respond and we have been swapping e-mails and pictures. He is looking into the cause and a solution, but said he would be sending me a new valve next week. Hopefully, they will get it resolved and won't have these problems in the future. I have to wonder if they may have just received a bad batch of valves.
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My 300cc bottle with a Best Fittings valve hasn’t been off the gun since I put it on. My 220 with a FX valve was flawless on and off. My gun is completely full right now and on standby. Before I refill it I will remove the bottle and see if I join the leak down club.
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If you don't mind me asking, what does the FX Valve cost? If the replacement I get from Best Fittings doesn't solve the problem, I may just replace it with an FX Valve.
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Did some more troubleshooting yesterday.....
Anybody has pictures of the inside of a good working valve?
It is certainly the valve and more specific the insight sealing that is not ok.
Took the valve out of the bottle, then took the different parts out of the valve housing: a seal with a pin on top (think this is teflon?) - a spring - a hollow screw to keep it all together.
I believe it is that first teflon? part that does not seal properly.....
BE CAREFUL: if the seal is really bad and you unscrew a 250 bar bottle, this might give a very loud bang and the bottle could fly away. I had the bang (at 100bar) and because I had a firm grip on the bottle it did not fly away, so luckily no damage. So if you unscrew the bottle and it starts hissing loud: stop and let all air out to loose the pressure before unscrewing further.
I am also in contact with Best Fittings to work out a solution....
Anybody has pictures of the inside of a good working valve?
It is certainly the valve and more specific the insight sealing that is not ok.
Took the valve out of the bottle, then took the different parts out of the valve housing: a seal with a pin on top (think this is teflon?) - a spring - a hollow screw to keep it all together.
I believe it is that first teflon? part that does not seal properly.....
BE CAREFUL: if the seal is really bad and you unscrew a 250 bar bottle, this might give a very loud bang and the bottle could fly away. I had the bang (at 100bar) and because I had a firm grip on the bottle it did not fly away, so luckily no damage. So if you unscrew the bottle and it starts hissing loud: stop and let all air out to loose the pressure before unscrewing further.
I am also in contact with Best Fittings to work out a solution....
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They are sending me a new valve this week. They told me the poppet material is HDPE, I'm not exactly sure what that is, but they said they chose that material because it provided a better seal. You shouldn't get a bang or launch the tank unless the valve is failing after you have already loosened it to the point the threads will no longer hold. When I remove mine all the air rushes out before I can ever get it more than halfway off the rifle. This is what the valve looks like, courtesy of Best Fittings.
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I'm not sure if it's exactly the same problem, but @broekzwans has tried to warn us about the BF valve problem that he had. He posted the above message on May 19...it's on page 6 of this same thread.
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When I get the replacement valve I'll take some measurements of the valve stem and compare them to the one that's giving me problems. I've been corresponding with Richard, who is the Managing Director/Senior Technical Consultant and he seems genuinely concerned about the problem and finding a fix. When I had my valve apart, there were no visible signs of it bending, but if it is in fact too long, that sure sounds like the cause of the problem! I should probably empty my 580cc tank and look at the valve stem in it, it has the FX Valve in it. I wonder if the end of the valve stem could just be ground down some to fix the problem?
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Best Fittings needs to resolve it. We are dealing with 3,000psi of air. That’s no joke and people shouldn’t be having to grind a valve to fix it. I still haven’t tested mine yet.
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Well if the stem is too long, I would expect the valve to close if the bottle is fully removed (but who am I) 
And shortening it should then fix the problem (I think)....
Was in contact with Sam (a Director) who was also indeed concerned and promised me spare parts.....
Will follow up with BF and this thread....
And shortening it should then fix the problem (I think)....
Was in contact with Sam (a Director) who was also indeed concerned and promised me spare parts.....
Will follow up with BF and this thread....
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I've not heard from BF since Monday. I was told a new valve would be shipped out this week, but they may be waiting until the problem is resolved if all their current valves have the same issue. I'm not in any rush, if I don't remove the tank then I don't have an issue. If I don't hear back from anyone by next Monday, I'll be following up with them as well.
It does seem a too long valve stem could be the culprit, that would delay the shutting of the valve as the tank is being unscrewed. But, mine would also continue to leak air even after it was completely removed, so it could be a combination of a couple issues.
It does seem a too long valve stem could be the culprit, that would delay the shutting of the valve as the tank is being unscrewed. But, mine would also continue to leak air even after it was completely removed, so it could be a combination of a couple issues.
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do you know what is the total plenum volume with the 17cc plenum volume?
i guess we have more space in the frame so maybe 27cc or 30cc
if someone has more information about it
i guess we have more space in the frame so maybe 27cc or 30cc
if someone has more information about it
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HDPE is High Density Polyethylene and is a plastic that is commonly used for milk bottles, jugs, detergents, etc. It seems kind of strange that that material would be used in a valve fitting and could be the reason your bottle continues to leak when removed, @FLgunner. It may not provide a complete seal as other more appropriate materials would. We will have to wait and see what BF has to say about a fix and/or replacement. Vetmx is right, this is a high pressure fitting and the problem needs to be addressed by them, not a DIY fix.
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I did receive the replacement valve, installed it and if seems to be working fine. I did not open it up to see if the internals were any different, however, the end of the valve stem visible when looking into it appeared to be a larger diameter, so it was different. It's working now, so I'm happy!
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So, how do we get the replacement valve?
Do you need the valve replacement tool from Best Fittings or is it easy enough to change on your own? I know valves can be difficult to change.
Thanks in advance for the info.
Do you need the valve replacement tool from Best Fittings or is it easy enough to change on your own? I know valves can be difficult to change.
Thanks in advance for the info.
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I contacted BF and told them it would bleed off the air as I was removing it. They sent me a replacement for free.
I had BF send me the tool with the replacement valve, it does make it easier, but the first time I removed it I just used a hex wrench in the hole on the collar of the valve to leverage it open. It wasn’t that tight.
I had BF send me the tool with the replacement valve, it does make it easier, but the first time I removed it I just used a hex wrench in the hole on the collar of the valve to leverage it open. It wasn’t that tight.
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My replacement parts did not fix the problem, leaking is less, but it still leaks when unscrewing the bottle
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you are actually right I have the dream tact compact in .22 and Utah airguns states in the spec sheet .22 is 320mm barrel..
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