Gas Solenoid

[mldpt]

The electro magnet on my gas cut of valve has packed up the make seems to be Sirai type z224a does anybody know where spares can be found, the rest of the valve seems ok
regards Mike

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[insider]

look in P.B.O. small ads for approved Corgi gas installer?

<hr width=100% size=1>Logical progression is fault finding tool in every tool box.
Regards,
Insider

 

[JamesS]

I recently bought a complete valve from Calor Gas at Southampton, try http://www.socal.co.uk/marine/html

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[William_H]

If it was me I couldn't resist trying to fix it. First use a multimeter on ohms range to test the electromagnet(solenoid) for resistance It should be in the range 40 ohms to perhaps 600 ohms. If you can't get any conductivity ie you get infinite ohms then remove the coil itself. you will find wires or terminals into the coil which will be covered with plastic tape. Cut the tape away until you get to the winding itself the outer layer will go to one terminal while the bottom if the inside winding goes to the other terminal. The most likely point of failure is the connection of the fine wire to the terminal or wire. Check the outside layer first. I am assuming that you have looked closely for signs of corrosion or burning. Although very tedious it is possible to unwind the wire to find the inside end bring it out and rewind the wire. It does not matter if the coil is shortened by even 10% and it is not important that the wire be wound smooth and neat like in the factory. You will probably curse me and throw it all away then buy a new one. Of course if the coil shows a reasonable resistance then connect it to 12 volts there should be some movement and click if not then something is jambed up and needs to be freed. good luck will

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[jon]

My recomendation would be to go for a latching valve available from Seath-Haztec, they do not use any power once latched and do not get hot as the others seem tnly problem is you may have to purchase their controller as well.

http://www.seath-haztec.com/gas control etc.htm

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[Anchorite]

That's all good stuff but I'd add the first test with any duff coil or electronics: sniff it! You're looking for the burnt varnish odour (sometimes found on certain Greek wines...) The nose is the poor man's multimeter.

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