hi everyone this is my first post however i have been reading for quite some time.  i am a licensed  electrician and an electronics tech.  i have built myself a hydrogen system with 16 plates 18" x 3" all tightly enclosed in a 4" schedule 40 pvc vessel.  i have everything sealed up to withstand pressures over 100 psi,  (don't worry i am doing everything safely and i will not use nearly 100 psi)  i have a bubbler made of a 2" pvc tube 24" long.  I eventually want to build an atomic hydrogen welder like the ones they used to use in the 1920's.  i can currently fill a 500ml water bottle with hho gas in 22 seconds using approximately 190 watts 12v @ 15-16 amps no pulsing yet.  my new scope should arrive soon along with all the necessary components for a high voltage pwm.  (Higher Voltage)

Anyways i am having a problem finding information online about what is needed to have a torch like flame without an explosion.  i have all kinds of cutting and braising torches that i am willing to use for this project but i am unsure of how to go about building this.  i have seen videos on youtube with  people showing off their torch flames.  i am hoping someone here may have some experience they are willing to share.  i assume that a constant pressure is needed with some sort of flashback valve or fast acting check valve.

i haven't bothered to video anything yet but if someone wants to see my setup i will break out the camcorder.
thanks in advance

hi stefan.  thanks for the quick reply.  i really appreciate it.  that sounds like a good idea and i will try that tomorrow.  i am wondering though if thats what these guys are using,  an air pump.

http://www.youtube.com/watch?v=sDELwXjtVCc
http://www.youtube.com/watch?v=mKKoU1Fp3gs

i am hoping that someone here has done this before or maybe one of these videos belongs to a member here
thanks again.

well you guys are the first to hear this !!!!!!!!!!!!

its 3:06 am and the water just broke so im off to the hospital.
seems like this project may be put off for a little while
wish me luck

If you look at my vids youll see how simple it could be. I've been doing light welding and cutting with my unit for a couple months now. my vid shows a bubbler and vapor filter. Im not using a bubbler or flash valve any more. sounds scary but i found all i needed was some bronze wool stuffed in the line tight to the flame tip. for a tip i just hose clamped a basketballs air needle to the line. I thought for sure it would be damaged by now but nope. In fact the air needle stays about room temp. if unconfortable about it, do use a bubbler and valve. also a fine screen or packed steel wool as close the the tip as you can. btw my tube name is strapped9 if you'd like to see my vids.

its a boy 6lb 12 oz perfectly healthy and cute.  thanks

i will resume my experiments soon and post everything that i am doing with video.
keep those torch ideas comming
thanks everyone

i have tried some steel wool in the tube just before the tip and i still get a big boom.  i just cant get this torch to work without exploding.  anyone have any input?