Low Pressure LPG Gas Flow Control Solenoid Valves

"... LPG Gas flow control ..." - do you mean "LPG flow control"?

Hello JohnDG,

yes. LPG flow control valve, flow regulator and ON/OFF type electronic / electrical controlled.

John, we control flow of Gas to the burners from Liquid Petroleum Gas supplied in cylinders.

We do not directly fire the Liquid but Fire the Gas Mixed with air. Gas flow pressure may not be high but we do hear hissing sound when it passes through nozzle.

If it's gas, it's not LPG (by definition).

These are LPG Cylinders containing LPG and what comes out is boiled out Gas.

The main point is, will your valve be controlling gas, or LPG, which is liquified gas (and therefore a liquid)?

Gas.

It is liquefied petroleum gas.

Yes. LIQUEFIED petroleum gas. Which is a liquid. But don't worry, Shyam has already made it clear that his valves will be used to control the boiled off gas.

There's a place called IHS Globalspec where you can search for products of various specifications, such as miniature solenoid valves.

A possible choice? http://www.solenoidsolutionsinc.com/solenoid-valves/wattmizer-low-power-series-solenoid-valves/

Hello Tornado, I think that is good link. I will look into the details. Thanks. Shyam

I do not think Mechanical latched types would be available, there is a safety consideration to take into account.

Also depending on your gas flow the small valves would not pass much gas if you ere using LPG at low pressure. There are large orrifce types specialy for this.

An electrical latching circuit would be easy enough providing safety controls were in place.

I think the tube ID is 8-10mm.

You may want to think about putting the valve on the high pressure side for safely reasons an for flow reasons....

Naturally a valve that is designed to handle the pressure....

Also, if a pressure reducer "hangs", you don't want your control valve to fail at the sudden high pressure.....I have had them hang in very windy and wet conditions followed by freezing!!

It was a "pig" to dry out and get working again. Luckily it froze in the low output condition, but it could have been either......

Which is why I have two on the gas line to my house and three stop cocks, just in case!! That has since become the standard in Germany.....

Hello Andy Germany, any pictures of such setup that you have talked about?

My system for the house heating and hot water is all manual, no automatic valves....except for the reducers of course...

What I was trying to get over is that gas pressure reducers can fail and having a high volume, low pressure automatic valve after it could be a liability....

I would have say a High pressure gas supply, followed by a manual shutoff valve, followed by a high pressure automatic valve, followed by a reducer, followed by a shutoff valve at the final device - at least!!

All clearly marked.

Best of luck!

There is a manual regulator and solenoid valve is to be placed after that and then there is another manual regulator.

I am doing this for the safety purpose to deliberately shut the supply to avoid LPG leak accident. I do have LPG leak sensors installed.

Then you are using medium pressure LPG not low pressure.

Solenoid valves are rated for pressure and flow requirements. Also the distance run of the tubing can have an effect on pressure drop so you must calculate for this as to regards of tube diameter.

Always plan an emergency shut off as close to the supply as possible. That is probably directly after the cylinder(?) valve......to my mind, it should be outside and away of any building and easily accessible.

My private 2,200 Liter gas tank is 100 meters away from my house.....

Letting the gas run through reducers and other units/devices before cutting the supply in an emergency, is NOT a good idea at all.....

Remember for gas tanks, here for example, a max of 83% is considered full. In a hot country, that might even be less....room for expansion is needed....

In India, LPG is supplied by weight of the Fluid + Gas = 15.5kg per cylinder which may have space for double the capacity. They also steal part of the gas so it may never be more.

Please visit web site www.rotexindia.com. they have large variety of solenoid valves. Please ensure that these valves are flame proof as they will be handling LPG gas.

well.

If you need to cut flow only, solenoid is the way to go; but if you need to regulate it you should buy a valve with neumatic or electronic positioner.

About solenoids i had use ASCO brand - 24V DC and 100 AC.

this solenoid vales last long than 10 year on the mill i work right now.

About regulated vales i had use, Spyrax Sarco, Fisher, Samson. 4-20mA

hope this help, if you need more info don't hesitate to ask.

regards!

Hi Hector.Argumedo: Sounds very good if it lasts 10 years. How much does this cost and where can I buy these?

Yes regulator one will be expensive and I will like to try few of those models as well for research to see their performance.

Thanks for information. It was highly useful.

If i remember correctly, no more than $200, we use a local supplier who buy all those things from external factories around the world.

ASCO by "EMERSON" has distributors on Asia, Europe, Africa, America, but it is an example, ´cause there are more options, there are more brands to look for of course, But if u ask me i have had no problems.

just ask your local supplier, i bet they could help you getting one.

I talked to one online communicator and perhaps she will send me info by email. Thanks.

ASCO:

For LPG valves:

http://www.ascovalve.com/applications/products/FuelGasOilSolenoidValvesData.aspx

ASCO Sales/Distributors in India:

http://www.ascovalve.com/Applications/DistributorLocator/DistributorRegionCountry.aspx?Region=Asia&strCountry=India&Distributor-Search-View-Details

Pune, Chennai, Baroda , Mumbai, Delhi, Kolkata

Web: http://www.ascovalve.com/

Millions are in use and 15 different styles of the valves that you state you need. That many certainly makes it harder to choose the one you want, to many choices to decide from. Much simpler if they only made one model!

Good Luck, Old Salt

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Hello old salt:

Yes, indeed it is difficult to select one when they make many that lookalike. I think I can figure it out soon. I am impressed with kind responses from so many old expert friends I received. You know it feels so good as if we are working in one place even though we are across the Globe.

I was with new Entrepreneurs who need technology help so held this meeting recently.