N/A Replacing gauge with foster fill?

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wildcj5

wildcj5

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Jun 15, 2019
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I have a p70 with a new cylinder but am curious about replacing the gauge at the end with a foster quick fill like the one in the attached link.

I have an old AirArms S400 mpr that was the same style where the cylinder had to be removed from the gun to fill. I took it to MAC1 back years ago and he removed the gauge and replaced it with a foster.

I don’t care about a gauge and refilling on the rifle is so much more convenient.

 
wildcj5 said:
I have a p70 with a new cylinder but am curious about replacing the gauge at the end with a foster quick fill like the one in the attached link.

I have an old AirArms S400 mpr that was the same style where the cylinder had to be removed from the gun to fill. I took it to MAC1 back years ago and he removed the gauge and replaced it with a foster.

I don’t care about a gauge and refilling on the rifle is so much more convenient.

Click to expand...
You can put a 3 way tee and have both.
 
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wildcj5 said:
Have you done this? Any idea what the thread specs would be?
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No but I'm taking for granted my skill set and shop setup (paintball gun manufacture since 1987 and aerospace machine shop). The tee is a functional solution but likely a little ugly. May require a custom or modified Tee. Professional airgunsmith would be best way to get it executed. A mismatch in threads or under-rated Tee would be dangerous.
 
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wildcj5 said:
Have you done this? Any idea what the thread specs would be?
Click to expand...
1/8 pipe. Npt, bsp and very occasionally 1/8g. They're all really similar and I've been known to stick 1/8 npt in everything. Picrel, you can do shenannigans. Disco fill doesn't clear the mod and you don't want to do a donny quick disconnect? 90!

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6gun said:
1/8 pipe. Npt, bsp and very occasionally 1/8g. They're all really similar and I've been known to stick 1/8 npt in everything. Picrel, you can do shenannigans. Disco fill doesn't clear the mod and you don't want to do a donny quick disconnect? 90!

View attachment 589088
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If it was a Tee you could have gauge on the other side. By the way, 1/8 NPT in everything only if you retap the threads and have enough "meat". 1/8NPT is 27 threads per inch while G1/8 = BSPP which is 28 threads per inch and so is BSPT. M10x1 is 25.4 threads per inch. So yes close but full threads are required for rated pressures.
 
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Sergey1972 said:
If it was a Tee you could have gauge on the other side. By the way, 1/8 NPT in everything only if you retap the threads and have enough "meat". 1/8NPT is 27 threads per inch while G1/8 = BSPP which is 28 threads per inch and so is BSPT. M10x1 is 25.4 threads per inch. So yes close but full threads are required for rated pressures.
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I try to leave just enough info that people have to go research themselves and find out the minutia without having to spoon feed. It's a way to force people to learn instead of just handing out answers with no context. The thread specs are important, and you will find out when pressurized if doing sketchy stuff.

That 90 I have is old parts bin stuff and at 2k psi is ok, I've tested it to 4500 but refuse to operate it there consistantly for safety overhead reasons. Don't go cross threading by 1 tpi, look up thread specs if you don't have the tools to rework everything.

Easy answer, figure you what your guage is, buy a t and a check valved Foster for that. Make sure your foster check is captured with its own keeper but within the foster and not a free floating pin.
 
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6gun said:
I try to leave just enough info that people have to go research themselves and find out the minutia without having to spoon feed. It's a way to force people to learn instead of just handing out answers with no context. The thread specs are important, and you will find out when pressurized if doing sketchy stuff.

That 90 I have is old parts bin stuff and at 2k psi is ok, I've tested it to 4500 but refuse to operate it there consistantly for safety overhead reasons. Don't go cross threading by 1 tpi, look up thread specs if you don't have the tools to rework everything.

Easy answer, figure you what your guage is, buy a t and a check valved Foster for that. Make sure your cost check is captured with its own keeper but within the foster and not a free floating pin.
Click to expand...
Totally agree with you. You are taking for granted how much you already know. How do we point people in the right direction without giving enough information to for them to get moving unsafely? How do we help them realize how much they don't know and have to research? It's human nature to look for the easy and quick answer, few people know what they don't know or are willing to do the work. How do we do this without looking arrogant or condescending? This are serious question that I'm struggling with. I have lost customers because I didn't handle this human condition correctly or take it into account.
 
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Motorhead said:
no different than ADDING a gauge and keeping a fill foster .... Just be creative with fittings while making sure threading & type match, engagement of threads & use of HP fittings.
My THOMAS from a few years ago.

View attachment 589093

View attachment 589094
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Beautiful setup with Custom Tee. Allows 3 different threads to exactly match available fititngs/threads. This is actually what I was thinking when I suggested a Tee. Just took for granted that I can identify the threads and machine parts.
 
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Sergey1972 said:
Totally agree with you. You are taking for granted how much you already know. How do we point people in the right direction without giving enough information to for them to get moving unsafely? How do we help them realize how much they don't know and have to research? It's human nature to look for the easy and quick answer, few people know what they don't know or are willing to do the work. How do we do this without looking arrogant or condescending? This are serious question that I'm struggling with. I have lost customers because I didn't handle this human condition correctly or take it into account.
Click to expand...
It's a personal flaw of mine. I have so much data spinning around upstairs that I will write you a phone book page or forget stuff. I left the 3 types of 1/8 pipe fittings I've run into in air guns, paintball, and factory automation just for good measure. Those with the drive to work on their guns will research, those who don't will send the gun in. I used to feel bad about losing clients, now I realize it's often a blessing in the end.
 
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Sergey1972 said:
Beautiful setup with Custom Tee. Allows 3 different threads to exactly match available fititngs/threads. This is actually what I was thinking when I suggested a Tee. Just took for granted that I can identify the threads and machine parts.
Click to expand...
The "T" in this case was a custom I fabricated using 7075 aluminum rod. ( Have a small machine shop at home )
 
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Motorhead said:
The "T" in this case was a custom I fabricated using 7075 aluminum rod. ( Have a small machine shop at home )
Click to expand...
If you have an industrial hardware store locally or mail order, hydraulic fittings are an easy way to go for pressure ratings. Then there's dive shops too for compressor related fittings such as this. Ex you want dual outputs on your compressor of 4500 1 way and 3000 the other.

As for the foster and guage combo, if I decide to stop using a probe on my bottle converted aea, I will be doing this and will post.
 
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One can also ( In this case the probe portion of end cap on a BSA Scorpion ) machined it off then drill & tap for a foster.
In this modification it was solely to get away from a probe, but had rifle not had a gauge elsewhere, it too could have been T'ed as previous.
* BTW, the factory cover cap still fit.

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www.apexairguns.com

FWB Quick Fill Conversion Kit All Feinwerkbau Models

These Quick Fill units allows your cylinders to be filled while the cylinder still attached to the air rifle, which is beneficial for reducing stress on the regulator and much easier and faster to refill when needed.These will add 32.5mm to the overall length of the cylinder between the end of...
www.apexairguns.com www.apexairguns.com
 
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BSJ said:
www.apexairguns.com

FWB Quick Fill Conversion Kit All Feinwerkbau Models

These Quick Fill units allows your cylinders to be filled while the cylinder still attached to the air rifle, which is beneficial for reducing stress on the regulator and much easier and faster to refill when needed.These will add 32.5mm to the overall length of the cylinder between the end of...
www.apexairguns.com www.apexairguns.com
Click to expand...
The issue with this is the end plugs on FWB cylinders are basically made to never come apart and if the do they are destroyed.
 
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Went shotgun style and ordered three different fosters since I wasn’t sure on what thread it was.

The metric one threaded in and came with a dowty(sp?) seal.

Taking the FWB gauge out pretty much destroyed it. I was seriously sweating screwing up this brand new expensive cylinder.

Filled it up with 2k and seems to be good to go.🤞


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