5V Solenoid valve
Archiver
Posts: 46,084
Hi All,
I need 3 solenoid type valves that actuate on 5V. Latching would be really
nice, but not required. They will be used with hydrogen gas at under 2 PSI.
Any ideas where I can find such a thing?
Jonathan
www.madlabs.info
I need 3 solenoid type valves that actuate on 5V. Latching would be really
nice, but not required. They will be used with hydrogen gas at under 2 PSI.
Any ideas where I can find such a thing?
Jonathan
www.madlabs.info
Comments
> Hi All,
>
> I need 3 solenoid type valves that actuate on 5V. Latching would be really
> nice, but not required. They will be used with hydrogen gas at under 2 PSI.
> Any ideas where I can find such a thing?
>
> Jonathan
>
> <A HREF="www.madlabs.info">www.madlabs.info</A>
>
>
>
>
Hi Jonathan,
Due to the safety issues with Hydrogen you would be best off using a valve
already rated for combustible gas use. This link has Brass Body Valves for Fuel
Gas Use.
<A HREF="http://asco.smartcats.com/sc_app/">ASCO SmartCAT SmartCAT Catalog</A>
Hydrogen is in this class. We use them with 150 PSI Hydrogen gas.
I would select a 24 volt AC or DC coil and switch it through a Solid State
Relay on the stamp.
If you leave the output active then it will act as the latch function until
you turn it off.
I use them in Plasma and Flame Cutting machines with Stamp II's all the time.
We use Acetylene Fuel Gas at 15 PSI and Hydrogen, Nitrogen, and Oxygen at 150
PSI. The valves are already safety rated so you don't have to worry.
The valves are around $120 US but still cheaper than a slick Boston Injury
Lawyer.
Wouldn't life be so much better without lawyers?
Contact me if you have any more questions.
Alan Bradford
Plasma Technologies
www.plasmatechnologies.com
[noparse][[/noparse]Non-text portions of this message have been removed]
Stamps dies and the relay stay on. You might want to look at a keep alive
or deadman approach is if control stops so does the gas. " House go Boom"
Original Message
From: plasmastamp@a... [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=Dt81cnabPVQwq3MhfTHNYJ9RHB-jMRkQSdOKC0rgKtQr7X5G4jtq7jricNM-k0n22iw3Dkkgq8EnMUPAhcU]plasmastamp@a...[/url
Sent: Wednesday, June 18, 2003 1:18 PM
To: basicstamps@yahoogroups.com
Subject: Re: [noparse][[/noparse]basicstamps] 5V Solenoid valve
>
> Hi All,
>
> I need 3 solenoid type valves that actuate on 5V. Latching would be really
> nice, but not required. They will be used with hydrogen gas at under 2
PSI.
> Any ideas where I can find such a thing?
>
> Jonathan
>
> <A HREF="www.madlabs.info">www.madlabs.info</A>
>
>
>
>
Hi Jonathan,
Due to the safety issues with Hydrogen you would be best off using a valve
already rated for combustible gas use. This link has Brass Body Valves for
Fuel
Gas Use.
<A HREF="http://asco.smartcats.com/sc_app/">ASCO SmartCAT SmartCAT
Catalog</A>
Hydrogen is in this class. We use them with 150 PSI Hydrogen gas.
I would select a 24 volt AC or DC coil and switch it through a Solid State
Relay on the stamp.
If you leave the output active then it will act as the latch function until
you turn it off.
I use them in Plasma and Flame Cutting machines with Stamp II's all the
time.
We use Acetylene Fuel Gas at 15 PSI and Hydrogen, Nitrogen, and Oxygen at
150
PSI. The valves are already safety rated so you don't have to worry.
The valves are around $120 US but still cheaper than a slick Boston Injury
Lawyer.
Wouldn't life be so much better without lawyers?
Contact me if you have any more questions.
Alan Bradford
Plasma Technologies
www.plasmatechnologies.com
[noparse][[/noparse]Non-text portions of this message have been removed]
To UNSUBSCRIBE, just send mail to:
basicstamps-unsubscribe@yahoogroups.com
from the same email address that you subscribed. Text in the Subject and
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Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
[noparse][[/noparse]Non-text portions of this message have been removed]
fuel cell powered robot. It's fuel tank holds around 2 liters of hydrogen at
very low pressure, less than 2 PSI. So, it would make a nice fireball, but
no serious explosion. Not that is is to be shrugged off lightly!!
However, I agree that latching may not be the best, at least not for all of
the valves. However, at least one of the valves in the system would be nice
to have latch. Energy resources are limited and complicated on this project.
It is taking shape though!!
Jonathan
www.madlabs.info
Original Message
From: "Sadler Porter" <porter.sadler@s...>
To: <basicstamps@yahoogroups.com>
Sent: Wednesday, June 18, 2003 11:04 AM
Subject: RE: [noparse][[/noparse]basicstamps] 5V Solenoid valve
> Also from a safety standpoint I don't think you really want latching
relays.
> Stamps dies and the relay stay on. You might want to look at a keep alive
> or deadman approach is if control stops so does the gas. " House go Boom"
>
>
Original Message
> From: plasmastamp@a... [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=_-I1IMQ9xLyK2ecgOpQ-aNcVQFFEPXAGLxAI0LtvHkxNAje-qxICKeHIELINf6GI2KVs73I1l1Zuo0oFKwk]plasmastamp@a...[/url
> Sent: Wednesday, June 18, 2003 1:18 PM
> To: basicstamps@yahoogroups.com
> Subject: Re: [noparse][[/noparse]basicstamps] 5V Solenoid valve
>
>
> >
> > Hi All,
> >
> > I need 3 solenoid type valves that actuate on 5V. Latching would be
really
> > nice, but not required. They will be used with hydrogen gas at under 2
> PSI.
> > Any ideas where I can find such a thing?
> >
> > Jonathan
> >
> > <A HREF="www.madlabs.info">www.madlabs.info</A>
> >
> >
> >
> >
>
> Hi Jonathan,
>
> Due to the safety issues with Hydrogen you would be best off using a valve
> already rated for combustible gas use. This link has Brass Body Valves for
> Fuel
> Gas Use.
>
> <A HREF="http://asco.smartcats.com/sc_app/">ASCO SmartCAT SmartCAT
> Catalog</A>
>
> Hydrogen is in this class. We use them with 150 PSI Hydrogen gas.
> I would select a 24 volt AC or DC coil and switch it through a Solid State
> Relay on the stamp.
> If you leave the output active then it will act as the latch function
until
> you turn it off.
>
> I use them in Plasma and Flame Cutting machines with Stamp II's all the
> time.
> We use Acetylene Fuel Gas at 15 PSI and Hydrogen, Nitrogen, and Oxygen at
> 150
> PSI. The valves are already safety rated so you don't have to worry.
>
> The valves are around $120 US but still cheaper than a slick Boston Injury
> Lawyer.
> Wouldn't life be so much better without lawyers?
>
> Contact me if you have any more questions.
> Alan Bradford
> Plasma Technologies
> www.plasmatechnologies.com
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and
> Body of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
> To UNSUBSCRIBE, just send mail to:
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>
>
>
>
>
I recently used some solenoid valves as part of a project...the gas was a
butane/propane mix but I'm not sure of the PSI figure...
I got the valves from RS ( rswww.com ) and they were 24v dc and about 30
GBP, the cheapest I could find anywhere...
they are safety rated too I believe and certainly designed / rated for GAS
usage...
If you are interested then I can mail you the order no's from RS...
good luck,
JoN.
>From: plasmastamp@a...
>Reply-To: basicstamps@yahoogroups.com
>To: basicstamps@yahoogroups.com
>Subject: Re: [noparse][[/noparse]basicstamps] 5V Solenoid valve
>Date: Wed, 18 Jun 2003 13:17:32 EDT
>
>
> >
> > Hi All,
> >
> > I need 3 solenoid type valves that actuate on 5V. Latching would be
>really
> > nice, but not required. They will be used with hydrogen gas at under 2
>PSI.
> > Any ideas where I can find such a thing?
> >
> > Jonathan
> >
> > <A HREF="www.madlabs.info">www.madlabs.info</A>
> >
> >
> >
> >
>
>Hi Jonathan,
>
>Due to the safety issues with Hydrogen you would be best off using a valve
>already rated for combustible gas use. This link has Brass Body Valves for
>Fuel
>Gas Use.
>
><A HREF="http://asco.smartcats.com/sc_app/">ASCO SmartCAT SmartCAT
>Catalog</A>
>
>Hydrogen is in this class. We use them with 150 PSI Hydrogen gas.
>I would select a 24 volt AC or DC coil and switch it through a Solid State
>Relay on the stamp.
>If you leave the output active then it will act as the latch function until
>you turn it off.
>
>I use them in Plasma and Flame Cutting machines with Stamp II's all the
>time.
>We use Acetylene Fuel Gas at 15 PSI and Hydrogen, Nitrogen, and Oxygen at
>150
>PSI. The valves are already safety rated so you don't have to worry.
>
>The valves are around $120 US but still cheaper than a slick Boston Injury
>Lawyer.
>Wouldn't life be so much better without lawyers?
>
>Contact me if you have any more questions.
>Alan Bradford
>Plasma Technologies
>www.plasmatechnologies.com
>
>
>[noparse][[/noparse]Non-text portions of this message have been removed]
>
>
>To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
>from the same email address that you subscribed. Text in the Subject and
>Body of the message will be ignored.
>
>
>Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
_________________________________________________________________
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liters of unconfined H2 don't make a serious explosion...
Many years ago in my partially misspent youth I realized that it was pretty
easy to generate H2 in my well stocked home chem lab. One of the more
amusing things to do with the H2 was to fill balloons and release them at
night with a lit fuse a foot or two long... On one occasion an errant spark
from the fuse ignited the balloon while I was still holding it. Apart from
the singed hair, it wasn't a big deal. (If I'd only had a Stamp and GPS to
log the altitude and temperature!)
Before any (more) flames start, please keep in mind that this was in the
'60's -- and this was pretty tame compared to the things that many others
were doing in their home chem labs ;-)
Randy
www.glitchbuster.com
Original Message
From: "Jonathan Peakall" <jpeakall@m...>
To: <basicstamps@yahoogroups.com>
Sent: Wednesday, June 18, 2003 11:20 AM
Subject: Re: [noparse][[/noparse]basicstamps] 5V Solenoid valve
>
> Safety is of course the first and last concern. However, this is for a H2
> fuel cell powered robot. It's fuel tank holds around 2 liters of hydrogen
at
> very low pressure, less than 2 PSI. So, it would make a nice fireball, but
> no serious explosion. Not that is is to be shrugged off lightly!!
>
> However, I agree that latching may not be the best, at least not for all
of
> the valves. However, at least one of the valves in the system would be
nice
> to have latch. Energy resources are limited and complicated on this
project.
> It is taking shape though!!
>
> Jonathan
>
> www.madlabs.info
>
>
>
>
Original Message
> From: "Sadler Porter" <porter.sadler@s...>
> To: <basicstamps@yahoogroups.com>
> Sent: Wednesday, June 18, 2003 11:04 AM
> Subject: RE: [noparse][[/noparse]basicstamps] 5V Solenoid valve
>
>
> > Also from a safety standpoint I don't think you really want latching
> relays.
> > Stamps dies and the relay stay on. You might want to look at a keep
alive
> > or deadman approach is if control stops so does the gas. " House go
Boom"
> >
> >
Original Message
> > From: plasmastamp@a... [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=tDknHtcHBpNANA4HYIPvZ4T41S6KxPNBSTIH6S8eAvAKN5rKzFSElwgOiwZ7uSlYqcwjRwwMH4ce]plasmastamp@a...[/url
> > Sent: Wednesday, June 18, 2003 1:18 PM
> > To: basicstamps@yahoogroups.com
> > Subject: Re: [noparse][[/noparse]basicstamps] 5V Solenoid valve
> >
> >
> > >
> > > Hi All,
> > >
> > > I need 3 solenoid type valves that actuate on 5V. Latching would be
> really
> > > nice, but not required. They will be used with hydrogen gas at under 2
> > PSI.
> > > Any ideas where I can find such a thing?
> > >
> > > Jonathan
> > >
> > > <A HREF="www.madlabs.info">www.madlabs.info</A>
> > >
> > >
> > >
> > >
> >
> > Hi Jonathan,
> >
> > Due to the safety issues with Hydrogen you would be best off using a
valve
> > already rated for combustible gas use. This link has Brass Body Valves
for
> > Fuel
> > Gas Use.
> >
> > <A HREF="http://asco.smartcats.com/sc_app/">ASCO SmartCAT SmartCAT
> > Catalog</A>
> >
> > Hydrogen is in this class. We use them with 150 PSI Hydrogen gas.
> > I would select a 24 volt AC or DC coil and switch it through a Solid
State
> > Relay on the stamp.
> > If you leave the output active then it will act as the latch function
> until
> > you turn it off.
> >
> > I use them in Plasma and Flame Cutting machines with Stamp II's all the
> > time.
> > We use Acetylene Fuel Gas at 15 PSI and Hydrogen, Nitrogen, and Oxygen
at
> > 150
> > PSI. The valves are already safety rated so you don't have to worry.
> >
> > The valves are around $120 US but still cheaper than a slick Boston
Injury
> > Lawyer.
> > Wouldn't life be so much better without lawyers?
> >
> > Contact me if you have any more questions.
> > Alan Bradford
> > Plasma Technologies
> > www.plasmatechnologies.com
> >
> >
> > [noparse][[/noparse]Non-text portions of this message have been removed]
> >
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> > from the same email address that you subscribed. Text in the Subject
and
> > Body of the message will be ignored.
> >
> >
> > Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
> >
> >
> >
> > [noparse][[/noparse]Non-text portions of this message have been removed]
> >
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> > from the same email address that you subscribed. Text in the Subject
and
> Body of the message will be ignored.
> >
> >
> > Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
> >
> >
> >
> >
> >
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and
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>
>
Great website!
> Date: Wed, 18 Jun 2003 07:26:03 -0700
> From: "Jonathan Peakall" <jpeakall@m...>
> Subject: 5V Solenoid valve
>
> Hi All,
>
> I need 3 solenoid type valves that actuate on 5V. Latching would be really
> nice, but not required. They will be used with hydrogen gas at under 2
PSI.
> Any ideas where I can find such a thing?
I use this type of valve for autozeroing a
differential pressure sensor in a hand
held manometer powered by a 9v battery,
so power is a big deal for me.
I have used 5v 3 ported valves from
three manufacturers:
1. clippard:
about $18, 6v operation
The least expensive but the heaviest
Uses most power
2. Pneutronics
5v, 3 ported valve, 47 ohms, $25 each?
This is what I am using now
The clippard and pneutronics valves generally
require full voltage
to open, but will stay open at about 1/2
voltage. So a charge a capacitor at the
9v battery voltage and use a mosfet to
blast the valve open, then I use 1/2
the battery voltage to keep them open.
3. The Lee company:
LHLX0500050B 5 vdc
LHLX0500000B 12 vdc
LFMX0516150A ported adapter
Sales: "Costa, Peter" <CostaP@T...>
>The latching valves are $45.93 in 100 pc quantities.
>A similar non-latching valve
>is $30.62 in 100 pc quantities.
The best! But the most expensive. Very tiny.
The only latching valve I have found.
This switch requires a pulse to change state.
Lee recommends using am
Allegro Microsystems 3966 dual full-bridge PWM
motor driver.
Hope this helps,
Dave
http://www.infiltec.com/seismo/ build a seismometer
http://www.infiltec.com/SID-GRB@home/ search for GRBs
http://www.infiltec.com/inf-fun.htm fun
http://www.infiltec.com/ work
combustable gas. Be very careful that all parts you use are rated for use
with hydrogen - don't let cost be a major decision maker for you. How much
is your life, or the lives of your family member's worth to you? Also keep
in mind the area the gas is to be used in. A confined space could accumulate
enough gas to be explosive and your home-brew controller could provide the
spark.
As to the 5V solenoid, can't say I've ever heard of one for 5V, not about to
say they dont exist though. Most common are 115 or 24 VAC, though 12 volt DC
is readily available as well. For ease of use I'd say get 12V DC and a
transistor/diode pair. Use a 12VDC power supply and you can split off 12V
for the transistor/solenoid power. The transistor just needs to operate
fully at 5V - there are some good logic level fets out there - can't
remember the name/code at the moment. The other option would be something
like a ULN2803 - 8 transistor/diode pairs in a single 18 pin dip. I bought
two for like $5ish canadian. Handy if you have more than one solenoid or
whatever.
If you go AC its a different kettle of fish. You need a triac (basically two
transitors back to back) and a snubber to handle the back current when the
solenoid powers down. I've still not been able to find a ready made snubber
and I don't know enough about them to properly size the parts for a
roll-my-own.
N.B. The Hindenburg's spectacular fireball was actually caused by static
electricity igniting the airship's outer skin - which had been painted with
(believe it or not) a dope that was almost identical to solid rocket fuel.
Hydrogen burns with a nearly invisible flame and no smoke - the Hindenburg
burnt with an orange flame and gave off great gouts of black smoke - just
like an aluminum based solid rocket fuel does. Hydrogen will still kill you
if you give it the chance.
Meridian 59 is back! Sacred Haven - server 200
www.skotos.net
Original Message
From: "Jonathan Peakall" <jpeakall@m...>
To: <basicstamps@yahoogroups.com>
Sent: Wednesday, June 18, 2003 7:26 AM
Subject: [noparse][[/noparse]basicstamps] 5V Solenoid valve
> Hi All,
>
> I need 3 solenoid type valves that actuate on 5V. Latching would be really
> nice, but not required. They will be used with hydrogen gas at under 2
PSI.
> Any ideas where I can find such a thing?
>
> Jonathan
>
> www.madlabs.info
>
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
Thanks! Great links, you are a life saver, I was beginning to despair!
Which models are you using? The Pnuetronics stuff looks great.I shot off an
inquiry to them. Which Clippards do you reccomend? The Lee Company website
was having a little trouble, it found the valve #, but then couldn't dislpay
it. I'll try again to-morrow.
> The clippard and pneutronics valves generally
> require full voltage
> to open, but will stay open at about 1/2
> voltage. So a charge a capacitor at the
> 9v battery voltage and use a mosfet to
> blast the valve open, then I use 1/2
> the battery voltage to keep them open.
Great idea!
Jonathan
www.madlabs.info
> I use this type of valve for autozeroing a
> differential pressure sensor in a hand
> held manometer powered by a 9v battery,
> so power is a big deal for me.
>
> I have used 5v 3 ported valves from
> three manufacturers:
>
> 1. clippard:
>
> about $18, 6v operation
> The least expensive but the heaviest
> Uses most power
>
> 2. Pneutronics
>
> 5v, 3 ported valve, 47 ohms, $25 each?
> This is what I am using now
>
> The clippard and pneutronics valves generally
> require full voltage
> to open, but will stay open at about 1/2
> voltage. So a charge a capacitor at the
> 9v battery voltage and use a mosfet to
> blast the valve open, then I use 1/2
> the battery voltage to keep them open.
>
> 3. The Lee company:
>
> LHLX0500050B 5 vdc
> LHLX0500000B 12 vdc
> LFMX0516150A ported adapter
> Sales: "Costa, Peter" <CostaP@T...>
> >The latching valves are $45.93 in 100 pc quantities.
> >A similar non-latching valve
> >is $30.62 in 100 pc quantities.
> The best! But the most expensive. Very tiny.
> The only latching valve I have found.
>
> This switch requires a pulse to change state.
> Lee recommends using am
> Allegro Microsystems 3966 dual full-bridge PWM
> motor driver.
>
> Hope this helps,
>
> Dave
> http://www.infiltec.com/seismo/ build a seismometer
> http://www.infiltec.com/SID-GRB@home/ search for GRBs
> http://www.infiltec.com/inf-fun.htm fun
> http://www.infiltec.com/ work
>
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>
>
>
in there as possible. I once saw a demo at the
Toronto Science Museum, where the guy burned a
balloon full of propane. It made a nice flare.
Then he partially inflated the balloon by mouth,
then added propane. He pointed out that a
flamable gas, with its own oxygen supply, was
technically known as a 'bomb'. When he touched
this off (by putting it over the lit propane
burner), the whole thing vanished with a loud
explosion. Just be aware, and careful.
BTW, no one was hurt by this. The support for
the mirror above his head rocked back and
forth a few times.
--- In basicstamps@yahoogroups.com, "Randy Jones" <randyjones@w...>
wrote:
> Sounds like an interesting project! I can vouch for the fact that
a few
> liters of unconfined H2 don't make a serious explosion...
>
> Many years ago in my partially misspent youth I realized that it
was pretty
> easy to generate H2 in my well stocked home chem lab. One of the
more
> amusing things to do with the H2 was to fill balloons and release
them at
> night with a lit fuse a foot or two long... On one occasion an
errant spark
> from the fuse ignited the balloon while I was still holding it.
Apart from
> the singed hair, it wasn't a big deal. (If I'd only had a Stamp
and GPS to
> log the altitude and temperature!)
>
> Before any (more) flames start, please keep in mind that this was
in the
> '60's -- and this was pretty tame compared to the things that many
others
> were doing in their home chem labs ;-)
>
> Randy
>
> www.glitchbuster.com
>
>
Original Message
> From: "Jonathan Peakall" <jpeakall@m...>
> To: <basicstamps@yahoogroups.com>
> Sent: Wednesday, June 18, 2003 11:20 AM
> Subject: Re: [noparse][[/noparse]basicstamps] 5V Solenoid valve
>
>
> >
> > Safety is of course the first and last concern. However, this is
for a H2
> > fuel cell powered robot. It's fuel tank holds around 2 liters of
hydrogen
> at
> > very low pressure, less than 2 PSI. So, it would make a nice
fireball, but
> > no serious explosion. Not that is is to be shrugged off lightly!!
> >
> > However, I agree that latching may not be the best, at least not
for all
> of
> > the valves. However, at least one of the valves in the system
would be
> nice
> > to have latch. Energy resources are limited and complicated on
this
> project.
> > It is taking shape though!!
> >
> > Jonathan
> >
> > www.madlabs.info
> >
> >
> >
> >
Original Message
> > From: "Sadler Porter" <porter.sadler@s...>
> > To: <basicstamps@yahoogroups.com>
> > Sent: Wednesday, June 18, 2003 11:04 AM
> > Subject: RE: [noparse][[/noparse]basicstamps] 5V Solenoid valve
> >
> >
> > > Also from a safety standpoint I don't think you really want
latching
> > relays.
> > > Stamps dies and the relay stay on. You might want to look at a
keep
> alive
> > > or deadman approach is if control stops so does the gas. "
House go
> Boom"
> > >
> > >
Original Message
> > > From: plasmastamp@a... [noparse][[/noparse]mailto[noparse]:p[/noparse]lasmastamp@a...]
> > > Sent: Wednesday, June 18, 2003 1:18 PM
> > > To: basicstamps@yahoogroups.com
> > > Subject: Re: [noparse][[/noparse]basicstamps] 5V Solenoid valve
> > >
> > >
> > > >
> > > > Hi All,
> > > >
> > > > I need 3 solenoid type valves that actuate on 5V. Latching
would be
> > really
> > > > nice, but not required. They will be used with hydrogen gas
at under 2
> > > PSI.
> > > > Any ideas where I can find such a thing?
> > > >
> > > > Jonathan
> > > >
> > > > <A HREF="www.madlabs.info">www.madlabs.info</A>
> > > >
> > > >
> > > >
> > > >
> > >
> > > Hi Jonathan,
> > >
> > > Due to the safety issues with Hydrogen you would be best off
using a
> valve
> > > already rated for combustible gas use. This link has Brass Body
Valves
> for
> > > Fuel
> > > Gas Use.
> > >
> > > <A HREF="http://asco.smartcats.com/sc_app/">ASCO SmartCAT
SmartCAT
> > > Catalog</A>
> > >
> > > Hydrogen is in this class. We use them with 150 PSI Hydrogen
gas.
> > > I would select a 24 volt AC or DC coil and switch it through a
Solid
> State
> > > Relay on the stamp.
> > > If you leave the output active then it will act as the latch
function
> > until
> > > you turn it off.
> > >
> > > I use them in Plasma and Flame Cutting machines with Stamp II's
all the
> > > time.
> > > We use Acetylene Fuel Gas at 15 PSI and Hydrogen, Nitrogen, and
Oxygen
> at
> > > 150
> > > PSI. The valves are already safety rated so you don't have to
worry.
> > >
> > > The valves are around $120 US but still cheaper than a slick
Boston
> Injury
> > > Lawyer.
> > > Wouldn't life be so much better without lawyers?
> > >
> > > Contact me if you have any more questions.
> > > Alan Bradford
> > > Plasma Technologies
> > > www.plasmatechnologies.com
> > >
> > >
> > > [noparse][[/noparse]Non-text portions of this message have been removed]
> > >
> > >
> > > To UNSUBSCRIBE, just send mail to:
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> and
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> > > [noparse][[/noparse]Non-text portions of this message have been removed]
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breaking contact and if some gas is near, it will start combustion.
Consider instead solid state switching (transistors). The following link
shows how to control several transistor switches with a stamp.
jim
http://www.geocities.com/jimforkin2003/
Original Message
From: Allan Lane [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=P-EenxlEouEqzaPP9C3Uon9Kr0QfadpbfXVACc6vKsfK0vZDz5uzSx45JRQsPl1DmJrmQltni9i5h63cR9rkihqa9TI]allan.lane@h...[/url
Sent: Monday, June 23, 2003 4:07 PM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] Re: 5V Solenoid valve
Yes, just make sure there's as little 'normal' air
in there as possible. I once saw a demo at the
Toronto Science Museum, where the guy burned a
balloon full of propane. It made a nice flare.
Then he partially inflated the balloon by mouth,
then added propane. He pointed out that a
flamable gas, with its own oxygen supply, was
technically known as a 'bomb'. When he touched
this off (by putting it over the lit propane
burner), the whole thing vanished with a loud
explosion. Just be aware, and careful.
BTW, no one was hurt by this. The support for
the mirror above his head rocked back and
forth a few times.
--- In basicstamps@yahoogroups.com, "Randy Jones" <randyjones@w...>
wrote:
> Sounds like an interesting project! I can vouch for the fact that
a few
> liters of unconfined H2 don't make a serious explosion...
>
> Many years ago in my partially misspent youth I realized that it
was pretty
> easy to generate H2 in my well stocked home chem lab. One of the
more
> amusing things to do with the H2 was to fill balloons and release
them at
> night with a lit fuse a foot or two long... On one occasion an
errant spark
> from the fuse ignited the balloon while I was still holding it.
Apart from
> the singed hair, it wasn't a big deal. (If I'd only had a Stamp
and GPS to
> log the altitude and temperature!)
>
> Before any (more) flames start, please keep in mind that this was
in the
> '60's -- and this was pretty tame compared to the things that many
others
> were doing in their home chem labs ;-)
>
> Randy
>
> www.glitchbuster.com
>
>
Original Message
> From: "Jonathan Peakall" <jpeakall@m...>
> To: <basicstamps@yahoogroups.com>
> Sent: Wednesday, June 18, 2003 11:20 AM
> Subject: Re: [noparse][[/noparse]basicstamps] 5V Solenoid valve
>
>
> >
> > Safety is of course the first and last concern. However, this is
for a H2
> > fuel cell powered robot. It's fuel tank holds around 2 liters of
hydrogen
> at
> > very low pressure, less than 2 PSI. So, it would make a nice
fireball, but
> > no serious explosion. Not that is is to be shrugged off lightly!!
> >
> > However, I agree that latching may not be the best, at least not
for all
> of
> > the valves. However, at least one of the valves in the system
would be
> nice
> > to have latch. Energy resources are limited and complicated on
this
> project.
> > It is taking shape though!!
> >
> > Jonathan
> >
> > www.madlabs.info
> >
> >
> >
> >
Original Message
> > From: "Sadler Porter" <porter.sadler@s...>
> > To: <basicstamps@yahoogroups.com>
> > Sent: Wednesday, June 18, 2003 11:04 AM
> > Subject: RE: [noparse][[/noparse]basicstamps] 5V Solenoid valve
> >
> >
> > > Also from a safety standpoint I don't think you really want
latching
> > relays.
> > > Stamps dies and the relay stay on. You might want to look at a
keep
> alive
> > > or deadman approach is if control stops so does the gas. "
House go
> Boom"
> > >
> > >
Original Message
> > > From: plasmastamp@a... [noparse][[/noparse]mailto[noparse]:p[/noparse]lasmastamp@a...]
> > > Sent: Wednesday, June 18, 2003 1:18 PM
> > > To: basicstamps@yahoogroups.com
> > > Subject: Re: [noparse][[/noparse]basicstamps] 5V Solenoid valve
> > >
> > >
> > > >
> > > > Hi All,
> > > >
> > > > I need 3 solenoid type valves that actuate on 5V. Latching
would be
> > really
> > > > nice, but not required. They will be used with hydrogen gas
at under 2
> > > PSI.
> > > > Any ideas where I can find such a thing?
> > > >
> > > > Jonathan
> > > >
> > > > <A HREF="www.madlabs.info">www.madlabs.info</A>
> > > >
> > > >
> > > >
> > > >
> > >
> > > Hi Jonathan,
> > >
> > > Due to the safety issues with Hydrogen you would be best off
using a
> valve
> > > already rated for combustible gas use. This link has Brass Body
Valves
> for
> > > Fuel
> > > Gas Use.
> > >
> > > <A HREF="http://asco.smartcats.com/sc_app/">ASCO SmartCAT
SmartCAT
> > > Catalog</A>
> > >
> > > Hydrogen is in this class. We use them with 150 PSI Hydrogen
gas.
> > > I would select a 24 volt AC or DC coil and switch it through a
Solid
> State
> > > Relay on the stamp.
> > > If you leave the output active then it will act as the latch
function
> > until
> > > you turn it off.
> > >
> > > I use them in Plasma and Flame Cutting machines with Stamp II's
all the
> > > time.
> > > We use Acetylene Fuel Gas at 15 PSI and Hydrogen, Nitrogen, and
Oxygen
> at
> > > 150
> > > PSI. The valves are already safety rated so you don't have to
worry.
> > >
> > > The valves are around $120 US but still cheaper than a slick
Boston
> Injury
> > > Lawyer.
> > > Wouldn't life be so much better without lawyers?
> > >
> > > Contact me if you have any more questions.
> > > Alan Bradford
> > > Plasma Technologies
> > > www.plasmatechnologies.com
> > >
> > >
> > > [noparse][[/noparse]Non-text portions of this message have been removed]
> > >
> > >
> > > To UNSUBSCRIBE, just send mail to:
> > > basicstamps-unsubscribe@yahoogroups.com
> > > from the same email address that you subscribed. Text in the
Subject
> and
> > > Body of the message will be ignored.
> > >
> > >
> > > Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
> > >
> > >
> > >
> > > [noparse][[/noparse]Non-text portions of this message have been removed]
> > >
> > >
> > > To UNSUBSCRIBE, just send mail to:
> > > basicstamps-unsubscribe@yahoogroups.com
> > > from the same email address that you subscribed. Text in the
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> and
> > Body of the message will be ignored.
> > >
> > >
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> > >
> > >
> > >
> > >
> >
> >
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