one of sebs crazy ideas alert ....

[slugger]

ok, heres my crazy notion.....
i have a fx 3 stage pump [250 bar capability] altho in truth ive never tried it beyond 200 bar as thats the fill pressure in my hw100 , and i now have a 7 litre 300 bar bottle....
what i would like is a high pressure check-valve gizmo so that i could *attempt* to fill the bottle with the pump [i did warn you guys]
ok, both my bottle and pump have an hw fill probe on the end, so what would be cool is a block of ally with fill probe sized holes [one each side] and a check valve somewhere in between [other wise the air i pumped in would simply hiss back out into the pump on the upstroke] now i realise how hilarious that might be, but i think me trying to fill a bottle with a pump will be hilarious enough
now i know we have some fart-smellers on here (copyright family guy) who can [and quite often do] put me off my crazy ideas with reasoned explanation... but in this instance im hoping for some words/advice in the direction of "yes seb, it can be done" [despite you all no doubt thinking its a stupid thing to even want to do]

ok techies. on your marks, get set, and GO !

[thisisdonald]

Ive seen vids on you tube of nutters like yourself who have made a machine that does the pumping for them... a pumping machine if you like...

[Bladerunner too]

or maybe something like the (neck) off a rapid bottle,That way you would already have thread to adapt (both ways) i.e. in and out.maybe,

[audiguypaul]

I may be wrong but im sure the compressors used to fill dive bottles cost several £1000's as they remove the moisture from the air, does the hand pump do this, if not then you may cause problems

[Bladerunner too]

I may be wrong but im sure the compressors used to fill dive bottles cost several £1000's as they remove the moisture from the air, does the hand pump do this, if not then you may cause problems

Think the decent ones do have a trap, but i can see your point, one would have to keep stopping the (machine) to bleed it.

[neil w]

Think the decent ones do have a trap, but i can see your point, one would have to keep stopping the (machine) to bleed it.

Air dryers, Me thinks.

[angrybear]

Hand pumps are not built to withstand anything even close to 300bar

[tinbum]

I'm heading to Wadebridge tomorrow, I'll drop my bottle off for a fill........

[Bladerunner too]

Air dryers, Me thinks.

i can visualize the machine now,a couple of hair dryers directed toward the pump air intake,

[Bladerunner too]

Hand pumps are not built to withstand anything even close to 300bar

Think mine goes to 250 bar, i say think cus my lad has it ,an i have a 12lt 300bar bottle,i prefer the easy life,

[slugger]

prepare to call an ambulance nick
seriously tho lads... 250 bar capability of the pump.. 250 bar would give me several fills , if this could be done/made it would save me a 2 hour round trip every time i want the bottle filled

[Bladerunner too]

prepare to call an ambulance nick
seriously tho lads... 250 bar capability of the pump.. 250 bar would give me several fills , if this could be done/made it would save me a 2 hour round trip every time i want the bottle filled

Think it can be done, An what do you think to the neck off a rapid bottle?

[Biker_Bob]

ok, heres my crazy notion.....
i have a fx 3 stage pump [250 bar capability] altho in truth ive never tried it beyond 200 bar as thats the fill pressure in my hw100 , and i now have a 7 litre 300 bar bottle....
what i would like is a high pressure check-valve gizmo so that i could *attempt* to fill the bottle with the pump [i did warn you guys]
ok, both my bottle and pump have an hw fill probe on the end, so what would be cool is a block of ally with fill probe sized holes [one each side] and a check valve somewhere in between [other wise the air i pumped in would simply hiss back out into the pump on the upstroke] now i realise how hilarious that might be, but i think me trying to fill a bottle with a pump will be hilarious enough
now i know we have some fart-smellers on here (copyright family guy) who can [and quite often do] put me off my crazy ideas with reasoned explanation... but in this instance im hoping for some words/advice in the direction of "yes seb, it can be done" [despite you all no doubt thinking its a stupid thing to even want to do]

ok techies. on your marks, get set, and GO !

You dont' need a check valve - the pump should have one built in.
I used to fill a Gunpower Stealth bottle with a pump and also a best fittings 500cc field bottle neither of which have their own check valve - it was physically hard work but it was possible.

A few observations - it is extremely hard work on the pump and it will generate a lot of heat and moisture. If you do manage to fill the cylinder I think the pump will probably be ruined by the end. You will need to take frequent breaks to let the pump cool down, in reality I think it would probably take a day to fill the cylinder, with rests for you and the pump.

Pumping over 200 bar is much harder than pumping up to 200 bar.

Without blowing my own trumpet I am extremely fit and quite large and strong and filling the 500cc cylinder to 250bar used to make me puff and sweat some and I had to take rest breaks to get the cylinder filled. I really think that you're on a hiding to nothing with this one.

[slugger]

Think it can be done, An what do you think to the neck off a rapid bottle?

im unsure what you meant buddy, elaborate for me ?

[Bladerunner too]

Fully agree with Biker Bob, the pump would have to be in water to take some of the heat away,an pretty sure the idea is build a machine to do the pumping, i hope,