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View Full Version : How to make a anti siphon for co2


Pwgsx
05-05-2007, 06:49 PM
I already installed 2 of these on my other tanks so I do not want to take one a part to find the parts I need, so if anyone has made one, can you give me the parts list??

thanks

Kenny_McCormic
05-05-2007, 07:35 PM
1/8 inch npt brass plug
1/8 inch od copper tubing
1/8 inch drill bit
solder/flux and soldering gun or torch

drill the hole in the plug and solder in a short length of the tubing. then check which side of the valve is up when the tank is screwed into the gun (every asa is different). remove the valve and screw in the assembly you made earlier then bend the tube so it will point upand touch the top side of the tank when the valve is screwed into the gun. put some loctite onthe valve and screw it back on. wait 24 hours before you fill and use the tank

Pwgsx
05-08-2007, 06:17 AM
just found out that the threads on a pmi tank are different on the valve side........

SparkyGT
05-08-2007, 12:51 PM
i usually use brake line fittings, loctite, no drilling, soldeirng required

Kenny_McCormic
05-08-2007, 02:25 PM
i dont like the idea of that big of an oppening but you could crimp down brakline not to mention the extra fittings decrease the tanks volume leaving less area for the gas to expand

SparkyGT
05-18-2007, 10:41 AM
if you're worried about decreasing the available space inside a tank, dont put a antisyphon in at all, use a remote, or go with HPA

oscar
05-20-2007, 04:08 AM
go to sundragun they sell for $4.50

Kenny_McCormic
05-20-2007, 07:46 AM
if you're worried about decreasing the available space inside a tank, dont put a antisyphon in at all, use a remote, or go with HPA
i would run hpa but the closest place to fill it is an hour away from here meaning fuel costs more than the goddamn fill