Author Topic: Foster, Parker, Air Venturi, and various Chinese Fittings  (Read 1544 times)

steveoh

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Foster, Parker, Air Venturi, and various Chinese Fittings
« on: October 06, 2020, 02:54:51 PM »
I've griped about this before, but holy hell, I hate all the air fitting manufacturers right now, especially the Chinese.

ALL Fittings measure differently. There are the "American Made" Foster and Parker quick release male and female connectors which are not exactly the same diameter and lengths, there is a "British Made" set of connectors that are probably Chinese since they have no identification name or numbers on them, then there are the Damn Smack Me in the Damn Head Chinese connectors that vary from part to part even though they were bought at the same time.

Do they seal? Sometimes.

I think I'll try to order up a bunch from Foster or Parker, and no longer mix parts. GGRRRRRRRR! 

diameters in MM range from

7.81
8.04
7.80
7.79
7.75
8.05
7.72
7.81
7.76
7.77

Some of the females will not connect to the males, and thus some females attach loosely.

I do not like hoses breaking loose at 4500 psi.

Also, some of the connectors will connect snuggly, but ever so slightly leak. Yes, I have soapy water all over the place. Adding tiny dab of silicone grease to the o-ring in the female connector helps.
« Last Edit: October 06, 2020, 03:23:25 PM by steveoh »


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Loren

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Re: Foster, Parker, Air Venturi, and various Chinese Fittings
« Reply #1 on: October 08, 2020, 03:24:27 AM »
I feel your pain...lol 
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Alan

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Re: Foster, Parker, Air Venturi, and various Chinese Fittings
« Reply #2 on: October 15, 2020, 07:04:25 AM »
Adding to the issue...

The fill port Foster fitting on my Impact developed a problem. The inside edge of the fitting (where the female fitting's latch balls rest on) started to roll over. The photo isn't all that sharp, but you get the point. This fact increased the diameter of the fitting to the point that the female fitting (almost) couldn't be removed. In desperation, I used  jewelers file to remove the lip. I did order a new fitting.

Now the flat edge (between the red arrows) is a low wear area, although there could be some swelling as the metal moved under the pressure exerted against the fitting. But oddly enough, the diameter of the original fitting measured .3084", and the brand new one .3110". This would indicate that swelling had not occurred. This leads to a couple of conclusions.

First, the fittings used by FX may not be proprietary as I thought they were; Japanese or Chinese perhaps? Or, manufacturing tolerances are not being held! Considering Steve's experience, it is most probably sloppy workmanship.

I should add another variable. The male Foster fitting on the Impact is partly shrouded by the frame of the airgun. Using standard Foster female fittings, make it very difficult to remove the fitting once the airgun is refilled. Because of this, I purchased two new Foster fittings with elongated outer sleeves. These units were labeled as DonnyFL, but be assured, these are asian-made by whomever. Whether the extra length, or the fact the fittings has a bit of silicon grease on them, caused the rolling of the edge, would be mere conjecture. But the fact remains, as Steve alluded to, some one in this industry, needs to standardize the dimensions of the airgun-ubiquitous Foster fittings!








  • Roswell, New Mexico
Alan

I have a Hill EC-3000 compressor. If you're a fellow Guild member, and you pass through Roswell, NM, I'll fill your tank as a courtesy (4,250 PSI limit).

steveoh

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Re: Foster, Parker, Air Venturi, and various Chinese Fittings
« Reply #3 on: October 15, 2020, 09:16:55 AM »
I threw away an Air Venturi male foster fitting that got so hammered by the ball bearings of the female fitting that I could no longer easily get it on or off.

As I think about this issue and contemplate the small fortune I’ve spent on connectors that often are not compatible with existing connectors, the clearer it becomes that we should probably replace both female and male fittings as soon as one fails or becomes scarred up.

I have emails out to Parker Fittings, and have done so in the past for Foster, to become a dealer and offer the connectors here at affordable prices. Of course I get sent to other companies to buy retail. Too damned many middlemen getting their piece of the action in my cynical opinion.

Perhaps a business license would help.

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steveoh

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Re: Foster, Parker, Air Venturi, and various Chinese Fittings
« Reply #4 on: November 13, 2020, 03:18:09 PM »
Paired Parker paintball / pcp AirGun quick release fittings are nice. They fit!

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Loren

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Re: Foster, Parker, Air Venturi, and various Chinese Fittings
« Reply #5 on: November 14, 2020, 03:26:07 AM »
Steve, were did you get them?
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Alan

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Re: Foster, Parker, Air Venturi, and various Chinese Fittings
« Reply #6 on: November 14, 2020, 04:10:28 AM »
As I alluded to previously, this is an issue affecting everyone in the airgun industry. I suspect this issue is one reason some manufacturers use probes, rather than Foster fittings.

This "rolling of the edges" of the male fitting is common, even in expensive airguns, including FX. You can bet that (FX) doesn't make the fittings (Chinese?). What's interesting, the max fill pressure (FX) is 250 BAR (3,625 PSI). Imagine the issues when filling to 310 BAR (4,496 PSI)?

Some here might remember the Scandinavian company who was touting their new airgun (not FX), which had a fill pressure of 510 BAR (7,542 PSI). Just think about this issues surrounding all of the pressure fittings, compressors, hoses, Boyle's law, you name it! No wonder to me that is was stillborn.
  • Roswell, New Mexico
Alan

I have a Hill EC-3000 compressor. If you're a fellow Guild member, and you pass through Roswell, NM, I'll fill your tank as a courtesy (4,250 PSI limit).

steveoh

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Re: Foster, Parker, Air Venturi, and various Chinese Fittings
« Reply #7 on: November 14, 2020, 08:00:37 AM »
Steve, were did you get them?

I got the New old stock female fittings on eBay, and the male fittings from a Parker distributor.

From Parker, the female fittings are crazy expensive at about $35 each. Male fittings $10 each.

Up next I’m going to find genuine Foster fittings. The Parkers by the way are completely compatible with Foster Brand from what I can see.

Interestingly, the Parker female fittings use 4 ball bearings, whereas the Foster uses 6. That might mean the Foster fittings are less susceptible to scarring as the load is spread out further. Of course that depends on hardness of the materials.

Again, the Chinese fittings are hit and miss  and tend to be larger male and female diameter.

I’m also on the search for micro bore hoses made in the USA and or Europe. I think I have a distributor.

Trying to avoid Chinese stuff fittings and hoses.

I did get some good connectors once from https://www.bestfittings.co.uk/

And so it goes.
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Loren

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Re: Foster, Parker, Air Venturi, and various Chinese Fittings
« Reply #8 on: December 01, 2020, 07:33:16 PM »


I had two of these today from Airforce tanks that I could not get to close after presurizing the tank.  Fussed with them endlessly deburring, polishing, lubing, new o-rings, and could not get them to close.  Gave up and ordered new parts.
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steveoh

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Re: Foster, Parker, Air Venturi, and various Chinese Fittings
« Reply #9 on: December 01, 2020, 07:46:49 PM »
I ended up swapping mine for some other brand. Trouble is I don’t recall what brand. Might have been https://www.bestfittings.co.uk/

Their stuff is good.
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Loren

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Re: Foster, Parker, Air Venturi, and various Chinese Fittings
« Reply #10 on: December 01, 2020, 08:01:59 PM »
I ordered a couple off Amazon simply because they can get them here faster than anyone else.  I was just looking at the Best Fitting and their fancy dust caps.  Prices are fair, just the darn wait for the trip across the pond
  • Baldwin City KS

steveoh

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Re: Foster, Parker, Air Venturi, and various Chinese Fittings
« Reply #11 on: December 01, 2020, 08:18:51 PM »
I ordered a couple off Amazon simply because they can get them here faster than anyone else.  I was just looking at the Best Fitting and their fancy dust caps.  Prices are fair, just the darn wait for the trip across the pond

I have some from Amazon. They are just ok. I think they are the “8mm” Chinese ones. Hope you get lucky and get better fittings!
  • Benicia, California
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