Dual 3/4" QEV Copper Launcher!!

[SpudStuff]

Wow that looks very nice. Clean soldering. Almost dosn't look like it is even soldered.

[joannaardway]

did you use two pistons? because there are two pipes leading to the barrel

The thing uses two QEVs in unison, so, yes, sort of.

[Animal81182]

Yea it is soldered just took me ages to get it lookin real neat - that was very important to me!!!!

The cost - actual was around £40-50 but i got a lot of the fittings and pipe free

I reckon it would have set me back £100-150 easily as i have used 35m copper which the fittings average around £10 each and the pipe is £30-40 per length!!!

The QEV's i used because we can't get hold of sprinkler valves over in the UK - but they are actually more powerfull!!! - A 3/4" QEV is as powerfull if not more than a 1" Sprinkler valve!!!!

[spud-tom]

is a qev the same as a piston?

[joannaardway]

Yes, in theory.

It's pre-made, and originally designed to operate pneumatic cylinders, but the theory of operation is identical.

It's more precisely made, so you can pilot them off almost anything. A small leak can fire these by accident - because they have no back flow whatsoever.

[Animal81182]

Yes exactly as Joanne said - hey there how are you - where have you been!!!???

[spud-tom]

Thanks, that helped me a lot

[squeaks]

If I wanted to find a QEV on ebay or somewhere what would I type in as a search 'cause I haven't been able to find one.

[Animal81182]

Try Quick exhaust valve - but to be honest i have only ever found really small bore QEV's on ebay!! - and they aint any cheaper!

Try pneumatic suppliers!

[john bolton]

its all nice and shiny! if we get some copper and make some 1 inch barrel sealers ill make one.

[joannaardway]

Animal hit the nail on the head - don't use eBay, unless you have a really odd size to get hold of.

I'm sure a helpful person will direct you to the Mcmaster part number... (I don't know it)

@Animal: I'm fine. Still living as normal - not dead yet, at least.

[Animal81182]

Jolly good - I am thinking the ones on mcmaster are pretty expensive if they have any!! - i was thinking i have possiably read this before on another thread - but it is still worth a try!!!

@Joanne Glad to see you are still hangin in their - have you not got any ongoing projects at the mo????

[joannaardway]

@ Animal: I have got some designs going at the moment. I'm not yet sure which of them to turn into reality.

Small funds and little time coupled with several hobbies and big ideas in all of them doesn't work well.

[Animal81182]

I am excactly the same - i oredered some stuff from Airlines so i could change the pilot on this one!!! - and get some QEV's for another project but they havent got any until the new year so i cancelled the order until their in to save on P&P - i am a bit gutted really as i can't fire it over the chrimbo hols!!!!

[nicholai]

yeah copper is pretty spendy in the USA, i was looking at home depot the other day and it was almost $40 for a 10 footer of 1" copper pipe

oh yeah, nice cannon animal, kick ass craftsmanship. Thumbs up!