N20 inflation question?

[Bgomez1996]

How do you release the air out of your sac after an inflation?

[5Lsal]

you can force it back out the needle hole but N2O is reabsorbed very quickly by the body. for me it goes down 90% in a few hours. the last 10% can last a couple of days but isn't really noticeable size-wise, mostly just sounds hollow when you tap the area

[Bgomez1996]

What is the best pump to use

[PolandN2O]

Hi! You don't need to force anything out, even if you leave it fully inflated it will reabsorb very quickly. About pumps I use N2O cracker. You can see it has 2 holes, you put IV line into one and block the second one with your finger if you decide that flow won't hurt you.
Other stuff you need is PVC:

and IV line:

[Bgomez1996]

How would I connect an IV line to a whipped cream dispenser if the lime don’t fit?

[5Lsal]

You'll need to cut off the end of the drip tube where the spike is, across the blue line in this pic:

The clear tube fits perfectly over the dispenser's "spout". Just make sure to swab your knife with alcohol first and the tube after you've cut it.

Good luck!