Pneumatics

[josh]

does anybody kno were else i can get a 3/2 valve other than ebay coz ive been keepin an eye on ebay and thas the only 1 thas bin on over the last week

You could use a 5 port in reverse to act like a 3 port. But you would need the good Mr Wood to explain how its done.

Or you can just block off the return port on the valve, we ran G3 like this for years.

[woody]

This should be suitable Josh......although its perhaps a little big.

It might have 5 ports but as Alan said .....easily modified by blocking one.... rather than using my weird mod.

Dont forget to check the solenoid voltage with the vendor...also the physical size and weight.

http://cgi.ebay.co.uk/3-8-BEECH-VALVE_W0QQitemZ120021981641QQihZ002QQcategoryZ1267 QQrdZ1QQcmdZViewItemhttp://cgi.ebay.co.uk/3-8-BEECH-VALV...2QQcategoryZ12 67QQrdZ1QQcmdZViewItem



(Message edited by woody on August 19, 2006)

[woody]

Another possibility.

http://cgi.ebay.co.uk/SOLENOID-VALVE-SMC-VT317_W0QQitemZ170019253618QQihZ007QQcategoryZ4871 8QQssPageNameZWDVWQQrdZ1QQcmdZViewItemhttp://cgi.ebay.co.uk/SOLENOID-VALVE...18QQihZ007QQca tegoryZ48718QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

Again check the voltage etc.

Specs here ....... http://stevenengineering.com/Tech_Support/PDFs/70D3SVT317.pdfhttp://stevenengineering.com/Tech_Su...70D3SVT317.pdf

[jamesb]

my team mate asked me a question today, and i dont know the answer for sure, any idea mario/woody?

on a small welding bottle (co2) like youd get from halfords, does the outlet valve do any kind of pressure restriction prior to the regulator?

I think (was fairly sure) no, but im not 100% sure. my team mate wishes to use a gas draw fire extinguisher filled from our robot co2 supply, instead of buying new welding co2 all the time, but is worried about putting the reg onto a fire extinguisher because he heard welding bottles have pre-regulator reduction, and doesnt want to damage his reg.

If woody/mario know either way, please let me know.

My names not woody or mario, But the valve on the top is just a pin valve like on a soda stream bottle, no regulation, just rubbish flowrate, if you take the stud out it looks like a normal BSP male/male 1/8th connector. with a pin in it.

If still in doubt- take one of the valves, hook it upto a bottle of co2 with a guage either side. turn the bottle on. Look at the pressures.

[woody]

No pressure restriction .

Just stick the reg on the gas draw modded extinguisher.

Just to further put your mind at rest... the inlet pressure rating is 180 bar on a disposable type bottle reg.

http://www.tooled-up.com/Artwork/ProdZoom/SEAREGMMG.jpghttp://www.tooled-up.com/Artwork/ProdZoom/SEAREGMMG.jpg

[jamesb]

many thanks