Foster fitting adapter?

[Martis 1]

 I ordered a new Hill M4 pump from Airguns of Arizona and just learned that it does not come with a quick release coupling.  I pulled the Foster fitting off my old Benjamin pump, but it has a female threaded end and apparently the Hill hose has a female threaded end.  Looking online, it appears that the fitting I need is simply my Foster fitting with the addition of a female to female adaptor.  I looked all over online but can’t fine that female to female adaptor for high pressure air anywhere.  Does anyone know of a source for this?
Thanks!

[Buldawg76]

Are the threads 1/8" NPT pipe threads or BSPP pipe threads. NPT is a tapered U.S. standard pipe thread and BSPP is a British standard straight thread. Being a hill pimp its likely NPT in which case this will do the job.

 https://www.ebay.com/itm/Paintball-Airsoft-PCP-Stainless-Steel-Female-Quick-Disconnect-1-8-NPT/292098897132?_trkparms=aid%3D1110001%26algo%3DSPLICE.SIM%26ao%3D1%26asc%3D20131231084308%26meid%3D941fdcadd8b64d91983e9955c2bf4136%26pid%3D100752%26rk%3D3%26rkt%3D12%26sd%3D372203299916%26itm%3D292098897132%26pmt%3D0%26noa%3D1%26pg%3D2047675&_trksid=p2047675.c100752.m1982

BD

[Martis 1]

That’s essentially what I already have except mine is branded “Foster”.  If I’m looking at things correctly though, the Hill hose has female threads so I need something with male threads to fit it.  If that makes sense.

[mobilehomer]

Will the complete fill hose from the Benji fit the Hill?

[Martis 1]

Will the complete fill hose from the Benji fit the Hill?

I’m hoping it does.  That’ll get me started.  AZ wants $25 for a fitting and about another $13 for shipping.  I believe I can get one that will work just fine from Amazon for about $23 shipped.  I’ll have to wait till the pump arrives and see what’s gonna work.

[Buldawg76]

Ok sorry I misunderstood your thread on which you needed. Try this one instead.

https://www.ebay.com/itm/Paintball-CO2-HPA-Compressed-Air-Fill-Fitting-Female-Quick-Disconnect-1-8-NPT/292553938735?_trkparms=aid%3D1110002%26algo%3DSPLICE.SOI%26ao%3D1%26asc%3D20190711095549%26meid%3Dfa16dcf6d16147f68aef7c9f349c7378%26pid%3D100047%26rk%3D2%26rkt%3D12%26sd%3D292098897132%26itm%3D292553938735%26pmt%3D0%26noa%3D1%26pg%3D2047675&_trksid=p2047675.c100047.m2108

BD

[AlanMcD]

Another path could be to just replace the entire hose with a new one that has the fitting on it.  I mention this as my older Hill pump (a MK II I think) had a short, fat hose on it - and most importantly it was not microbore.

A microbore hose will greatly reduce the pumps it takes to simply charge the line, and the added length is really nice too.  I think I went from more than 12 pumps to get to ~2000 psi with my original ~1 foot long Hill hose to about 7 with a ~30" long microbore.

Just offering it up in case Hill has not changed things.  If not, you could try this:

Edit - based on reading some of the comments on the item above, it looks like Hill is still not using a microbore hose.  This might really be a much better way to go! Do note that it has a female end to go into your pump, and a male end to take your current foster fitting - it does not come with the foster fittings.

[Buldawg76]

Another path could be to just replace the entire hose with a new one that has the fitting on it.  I mention this as my older Hill pump (a MK II I think) had a short, fat hose on it - and most importantly it was not microbore.

A microbore hose will greatly reduce the pumps it takes to simply charge the line, and the added length is really nice too.  I think I went from more than 12 pumps to get to ~2000 psi with my original ~1 foot long Hill hose to about 7 with a ~30" long microbore.

Just offering it up in case Hill has not changed things.  If not, you could try this:

Edit - based on reading some of the comments on the item above, it looks like Hill is still not using a microbore hose.  This might really be a much better way to go! Do note that it has a female end to go into your pump, and a male end to take your current foster fitting - it does not come with the foster fittings.

If the hill pump has 1/8" NPT threads then this hose not work since it is 1/8" BSPP threads.

BD

[BackStop]

Wow!   I only have one of the cheap Chinese hand pumps as a backup for my Freedoms.'


If Hill pumps are THIS much trouble... I am VERY happy I only spent about $40 on my cheap one!   


It works on what I have right out of the box...

 

[Martis 1]

Per the website the hose has a 1/8” BSP thread.  Also, on the MK4 they say it’s a longer hose, and looks like a good micro bore.

[Buldawg76]

Yep my 4 year old Pump from Mike Melicks flying dragons is still going strong for 40 bucks. Granted I do not use it often but it always works when I do.

Since the hill pump is BSPP then this is the one you need.

https://www.ebay.com/itm/Paintball-1-8-BSPP-Male-to-8MM-Female-Thread-Quick-Disconnect-Connector-Adapter/223691020162?hash=item3415061782:g:j9YAAOSwXqpdlZlM

Or this one.

https://www.ebay.com/itm/Foster-Female-Quick-Disconnect-to-1-8-BSPP-Male-5000-PSI/303211420469?hash=item4698cf1b35:g:8Z0AAOSwul9dHNta



BD

[Martis 1]

Yep my 4 year old Pump from Mike Melicks flying dragons is still going strong for 40 bucks. Granted I do not use it often but it always works when I do.

Since the hill pump is BSPP then this is the one you need.

https://www.ebay.com/itm/Paintball-1-8-BSPP-Male-to-8MM-Female-Thread-Quick-Disconnect-Connector-Adapter/223691020162?hash=item3415061782:g:j9YAAOSwXqpdlZlM

Thanks Mike, that looks like what I need alright!

As to the Hll pump vs cheap Chinese pumps, I feel like there is no right or wrong answer.  When I decided I couldn’t rebuild my Benji I started looking at all the old threads and reviews I could find.  Lots of people said their Chinese pumps worked as good or better than a Hill, for a fraction of the cost.  When I tried to figure out which Chinese pumps were good and which were bad, the consensus was that they were all the same.  That’s not entirely true, as apparently some actually are designed to have water in them!  One pump that was recommended was sold by Walmart, but it’s no longer in stock, so I looked at Amazon and ordered the Hiram, which was the most purchased on their website.  Unfortunately after I ordered it I took a long look at the reviews and they were about 50% lousy, including one that said water, or some other kind of liquid leaked out of it, probably into the gun.  When I asked questions about it, several people responded telling me not to buy that pump, and to buy a Hill!!!

Well when the Hiram pump arrived it looked good enough, but the very fitting I’m dealing with on the Hill was a problem.  First, it was too large in diameter so I had to take the TKO off my disco in order to attach it, and then when I did it wouldn’t hold, so I returned the pump. 

The other thing that concerned me about the Chinese pumps I looked at were that none of them came with desiccant filters or a way to attach one.  I’m still dealing with the damage to my guns that I caused by pumping moisture into them with my old Benji pump.  Don’t care to go through this again. 

Bottom line is, if you ask anything about a Hill pump, somebody is gonna tell you to buy a Chinese pump.  If you ask anything about a Chinese pump, somebody is gonna tell you to buy a Hill.

Or this one.

https://www.ebay.com/itm/Foster-Female-Quick-Disconnect-to-1-8-BSPP-Male-5000-PSI/303211420469?hash=item4698cf1b35:g:8Z0AAOSwul9dHNta



BD

[Buldawg76]

Agree there are many many Chinese pump out there so doing your research is very important. Mine from flying dragons does not have any desiccant filter or a provision for one either but if used correctly I have never had any significant amount of moisture come out when bleeding off the pressure. It does have glass balls in a pocket at the bottom of the pump base to collect moisture and allows it to be blown out when bleeding off the pressure.

The key is to use slow deliberate pumps with about a second pause at the top and bottom of the strokes to allow cooling of the pump and air being compressed. o not pump with a fast rapid pumping cycle since this is what builds heat and squeezes the moisture out of the air compressed.

http://flyingdragonairrifles.org/index.php?route=product/category&path=63_66

I believe the pump I have from flying dragon is a Tousa brand, unfortunately he does no have them listed on h9is site anymore but you can call him to see if he can still get them or may have some that are not listed.

The fitting you linked to is the same as my second link in the above post just cost 5 bucks more.

BD

[Martis 1]

I had no issues with my Benji pump and Disco for about 3 years, but when I got the Marauder and was pumping it to 3,000 psi I quickly had leaks in both the Disco and the Marauder.  Maybe just going to the higher pressure gun caused more moisture?  I had installed a small Harbor Freight desiccant filter on my pump shortly after I bought it, and my routine was to pump 25 slow stokes between breaks.  I never felt moisture when I opened the relief valve either.  I also routinely put a drop of silicone oil on the pump shaft from time to time and thought all was well. 

Last winter I tore down the Disco and found corrosion on the gauge block and inside of the valve.  Ended up replacing both parts and it now holds air.

I held off rebuilding the Marauder until this fall, and was shocked to find some really nasty rust and pitting.  Air tube is destroyed. That prompted me to open up my pump, even though it was working fine. 

I was really shocked to find extensive corrosion and pitting throughout the pump.  Only reason it still worked was because the corrosion was acting as o-rings and sealing it all up.   Once I pulled it apart, it would never seal again. 

I learned the hard way that tour aiir source can destroy your gun.  I may be going overboard now, but the reason I went with the Hill pump instead of trying another Chinese pump is that at least the Hill comes with, and is designed to use, a desiccant filter and is supposedly well made.  Even at that, I intend to tear down my guns and pump at least once a year and check for moisture/damage.  If I do that for awhile and don’t see any issues, I may back off on it.   

I see this stuff as being very similar to scuba gear.  Both are basically 3,000 psi air pressure systems held together with o-rings.  With scuba gear, it’s supposed to be serviced yearly, and even at that, it often fails.  I just decided that the cost of the power and inherent accuracy of PCP guns over other systems is the need for routine servicing.

[Buldawg76]

 I agree with all you said and do to prevent the moisture/corrosion issues from occurring. The higher pressure (3000) does create more moisture for sure since it creates more heat while pumping and squeezes out more water from the air.

Keep in mind that some of the moisture/corrosion at the gauge block areas comes from the outside of the tube thru the hole the gauge passes thru since between the two o rings is open to the atmosphere. I coat the gauge block and tube in those areas with silicone grease as some protection. I also add a few drops of silicone oil to the fill fitting of the guns to get blown into the tube when filling so it coats the inside of the tubes and valves for further protection about every tin or two of pellets shot.. I have had no corrosion issue inside my numerous PCPs since doing those things.

I do fill mainly from tanks that I fill with a electric Chinese compressor that has a molecular sieve on the high side to trap moisture. When bleeding of the compressor side of the HPA line I see lots of moisture blow out the bleed but none at the tanks bleed.

BD 

[Martis 1]

I may have to look into one of those compressors down the line.  Sounds like a pretty good deal. 

As to the moisture in my guns, it’s hard to tell with the Disco because the outside of the gauge block was corroded, and the inside of the valve was.  On the Marauder however, the gauge block and valve were in good shape, except the top of the gauge block, closest to the front of the gun, and that front o-ring, were bad.  The rust and pitting were in the air tube.  Picture leaning the gun against the wall, and pouring a bit of water into the fill nipple, then letting it sit like that till it rusted.  Also, the fill nipple and pretty much that whole assembly was a mess.  That’s what leads me to believe I was pumping moisture into the gun from the pump. 

When the Marauder got to where it was losing about 1,500 psi overnight I gave up the fight and left it leaning against the wall.  It sat like that with zero pressure for several months, which probably didn’t help...

[Buldawg76]

Yea I do believe your was indeed two fold with moisture from outside and inside. I do store some of my higher end guns muzzle down so that if there is any moisture present to cause corrosion it will hopefully attack the fill end fittings versus the valve and or gauge block. No present evidence of this helping or hurting but it makes me fell better. LOL.

Others I store horizontal and some leaned against the wall like you stated so no real rhyme or reason for one being better than the other.

Its just the nature of the beasts and our never ending battle with them.

BD

[Martis 1]

Well the Hill pump arrived just a bit ago. .  The hose from the old Benjamin pump fit on the Hill pump and works just fine, but it’s shorter and appears to be larger volume.  I used it to top the Disco up and everything seems to work well. 

Mike, thanks for the link to the Foster fitting on E-bay.  I’ll order that and set the hose up that came with the new pump.

Thanks for all the help guys!  Nice to be able to shoot the PCP’s again!

[mobilehomer]

Or you could get something similar to this -

[Buldawg76]

Or you could get something similar to this -

Those just have a tampon type fiber filter inside but are better than nothing at all for sure. They do trap moisture and contaminates before they enter the guns tubes. You can always add some 13X molecular sieve in between two short sections of the fiber tampon to actually trap the moisture nicely.

BD