Quickfill adaptor for FX pressure bottle
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Stainless steel quickfill adaptor with foster male connection, to fill up your spare FX pressure bottle without losing any air when screwing it on- or off the bottle!

€ 19,95
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Quickfill adaptor with foster male for filling up your spare FX air bottle without loosing air


This solid, stainless steel, quickfill adaptor with foster male connection can be used to fill up your spare FX air tanks. Our special design makes sure you do not waste any air when the adaptor is screwed on- or off the bottle so you will always keep the maximum pressure left in the bottle.
The same way you normally fill your FX rifle, with your scuba tank and fill set, you can fill up your spare FX air tank. Just screw the adaptor into the bottle, connect your fill set with hose to the adaptor and fill up the bottle slowly to the maximum allowed fill pressure, close your scuba tank and depressurize the fillset and hose and you are ready. The quickfill adaptor can be unscrewed on- and off the bottle without losing any air.

The quickfill adaptor for FX bottle's is also equipped with a M4 treaded hole where a headless M4 allen bold can be screwed in, this can be used to open up the bottle's valve so you can depressurize a bottle or you can use it as a flow restrictor when filling the bottle so you will be sure the filling process will go slowly.

Bottle is not included



Inside the FX valve construction there a 4,5×1,5 oring used. This ring is the only part keeping the valve seat in it's correct position. Due to the blast of air, in some occasion, this o-ring can be dislocated causing the valve seat not to close properly.
It can be solved or prevented following the instructions below;

By replacing the red marked factory oring below, with the new o-ring (with a different size and hardness) what is included with the bottle adaptor, the valve seat will remain perfectly in it's position during use and will seal properly.

Huma-air includes this new model of o-ring with their FX bottle quickfill adaptors. So in case it would happen, it can be solved inmediately, or of course you can also replace this o-ring before you start using the quickfill adaptor. The size used is 5,5×1,5 FKM



We use tracked priority shipping for this item. 



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Dai jones - 12-03-2021 10:54

Great product, and very good shop and staff.

Roine - 18-02-2021 12:40

Bästa sättet att tömma eller fylla flaskan, En bra produkt

Brendan - 09-02-2021 03:14

Excellent quality. Lighting fast delivery. Works flawlessly.

Trevor Spencer - 13-01-2021 12:33

I purchased the quick filling adapter from huma-air, very good useful item to have. No fuss just screwed into bottle and filled slowly from empty.

Gregory Savage - 03-01-2021 22:45

Works perfect! Just what the air doctor ordered. I wish Utah Air, Pyramid Air or AOA carried these. It would have been much cheaper shipping.

Phil Noel - 23-12-2020 11:54

Great bit of kit , But maybe a little expensive .

Samuel - 20-12-2020 20:41

Super nice thing to have. Easy and fast. High Quality. Recommended

Mohamed - 05-12-2020 18:12

Great quality products 👍

Marshall Scott - 03-12-2020 13:55

Works Great, Super fast Shipping, My next order is in the que. Thanks again!!

Wilfredo - 05-11-2020 15:05

Easy to use

Georgios - 04-11-2020 17:29

Just works! Excellent product! Thanks for creating this Huma! 👌👍💪

Wilfried - 04-11-2020 10:07

Goede kwaliteit en zeer gemakkelijk

Spray1Mark - 20-10-2020 22:00

Fantastic product, fill an FX bottle off the gun in the field using a portable compressor running form the car battery, all whilst shooting the gun with your other bottle on it, swap, repeat!

Carlos Antolin - 13-10-2020 10:39

Excelent product!

Mr Fredrik - 12-10-2020 07:08

When i finally got it was great !!

Giorgos - 10-10-2020 23:43

Works perfectly for filling up my extra CF bottles for my Impact MK II. Huma always pushing the frontiers of Airgun accessories/mods development.

Jeffrey - 01-10-2020 00:45

Hard to find adapter very useful for FX owners. Well machined and arrived very quickly.

Sergey - 22-09-2020 22:00

Perfect idea!!

Sergey - 22-09-2020 21:59

Perfect idea!!!!!

Joe - 20-09-2020 11:05

Simple. Easy to use. Very practical. Highly recommend. I ended up buying two. Would I buy again. Yes, most certainly.

Tom - 19-09-2020 05:06

Great product. Reasonably priced. Very fast delivery to the USA. Highly recommended.

Dennis Spriggs - 12-09-2020 20:59

Excellently made, fast reliable service

Paul - 30-08-2020 21:58


Krittipong - 30-08-2020 10:35


Nicolas Alvarez Bruno - 28-08-2020 18:38

Excellent product

Peter S. - 27-08-2020 22:35

Perfect idea, great workmanship, very useful for somebody who owns more air bottles, big thumb up for this product!

Kevin - 27-08-2020 05:44

Great product easy to use and so convenient . Excellent quick delivery also great firm to deal with.👍👍 AAA++++

Zbigniew - 26-08-2020 19:50

Great product. It is excactly what I was looking for having more than 1 fx bottles

wendell scott - 26-08-2020 04:57

I have long waited for someone to come up with a safe manner of putting air in or getting air out of the FX air bottle with the valve installed. Huma-air has really designed a great product. I really did not expect to get my quick fill adapter so soon. I really thank you.

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