Motorised gas valve for cooking gas bottle?

[king of pipes]

There are plenty of gas interlocking systems on the market I used to fit them in school laboratories and kitchens , with technology in solar power and battery storage I would think one of these systems could be adapted to be used in even the most remote of locations ?

 

[boilerboy22]

Thanks, but we cannot use solar or external battery....we only have the internal battery in the "pay as you go" valve which is connected to the cylinder.

 

[Knappers]

I think your criteria are too restrictive.
A latching solenoid is what you need but don't know if you'd find one to work on 3.6v - it's just not enough power. Then you'd need to control it and anything electrical would likely want 5v.
The only thing I can conceive would be to use a control valve with flame supervision (thermocouple) and use the battery circuit to energise the coil.
Insert coin and manually set valve, when timer ends valve drops?...
Search -

Gas Control Valve Tap with Flame Supervision Device​

 

[boilerboy22]

Thanks,
Also, a gas cooker needs (and permits) a spark to be used to light it.
As such, how can it possibly ever pass ATEX approval? (Atmospheres explosive regulations)
Do you agree, ATEX approval and gas fires can never happen?

 

[Knappers]

Will only apply to equipment in cylinder enclosure or confined enclosure. Cooker would be in a ventilated room?

 

[Knappers]

Forget the spark - you'd have an open flame.
Of course you can't have a fire in an explosive environment!

 

[boilerboy22]

Thanks, im baffled why the customer has said they need ATEX approval. I think its because the flame could go out, the room could then get filled with gas, then the flame or spark happens, and then boom....but does that situation call for ATEX approval?

 

[Knappers]

assume theyre looking at a solution to fit onto gas bottle in enclosure and so nothing to do with fire. I would give up on having a bottle mounted solution and rather offer an inline solution to be mounted outside enclosure.

 

[boilerboy22]

I would give up on having a bottle mounted solution and rather offer an inline solution to be mounted outside enclosure.

Thankyou very much, that sounds good, though our customers may rip the tube off the cylinder and then put their own tube on the cylinder and steel the gas without paying.
Though your idea does sound very good.....we still need the motorized valve or latching solonoid which draws no power once it has been actuated. And this must be battery operated.
In your opinion, would you say we are looking at a custom valve etc?.....it all seems very expensive?

This is like what we seek...

Cylinder Smart Meter Interactive

www.paygoenergy.co

....but we dont want mobile phone control...just tokens inserted for 10mins of gas....and we need it battery powered, and with the "no power drain once valve actuated").

 

[Ric2013]

Thankyou very much, that sounds good, though our customers may rip the tube off the cylinder and then put their own tube on the cylinder and steel the gas without paying.

Also, they could even supply their own tube and regulator and bypass any fitting you come up with. In which case, then find a device that uses the small cylinders that cost a couple of pounds each and if they go through a whole can in a short amount of time, questions can be asked. But, realistically, a customer that supplies their own tube to save money on gas is likely to be a rare event, and I don't see how you can really avoid that.

From a liability point of view, I expect it's a bit like expecting a landlord to have a plan for when a tenant removes the gas hose from the gas cooker and just uses the open hose to toast his sandwiches. I grant that you are dealing with minors here, but I think what it's going to come down to is either they are considered mature enough to be safe to use the appliance (and someone takes ultimate responsibilty for them) or I suspect they would need to be supervised at all times.