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Old 17-06-11, 11:10 AM   #1
martinpaff
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Default Loughborough College Engine

Dear All

To assist in running a new acquisition, I need a propane demand valve, or a combined regulator/demand valve.

I'm having trouble finding anything useful in the UK, although they seem to be easily available in the US.

Any help with a valve, or just locating a valve would be much appreciated.

Many thanks,

Martin.
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Old 17-06-11, 11:32 AM   #2
listerdiesel
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Martin:

You would normally have a high-pressure regulator feeding the demand valve, I haven't seen the two functions combined.

What size of engine is it for?

Peter
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Old 17-06-11, 11:37 AM   #3
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They have come up on Evilbay sometimes, normally fitted to a Villiers.

Hope you have your Gas Safe registration...
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Old 17-06-11, 11:49 AM   #4
martinpaff
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The high pressure regulator is not a problem; I can always get one, but I'm having trouble finding the demand valve. They are available combined and are sometimes used in applications like LPG powered generators, etc.

The engine is about 8hp, single cylinder, horizontal o/c...

Martin.
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Old 17-06-11, 11:58 AM   #5
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As suggested, you could look on ebay, but that would probably be too small, you need a 10" or 12" valve for the engine you are playing with, possibly bigger.

The people to approach would be one of the LPG conversion places who would be in that market, albeit with different end markets. Tghey would possibly have contacts.

Fork trucks in cold stores use LPG, so a Fork Truck company might be worth a call, and finally, Calor Gas may be able to point you in the right direction.

Peter
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Old 17-06-11, 12:48 PM   #6
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Martin,

If you want to just get it running temporarily the usual trick is a black bin liner with the gas supply and feed tightly taped in, the engine will then suck what it wants.

Martin P
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Old 17-06-11, 01:00 PM   #7
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Quote:
Originally Posted by Lister M View Post
Martin,

If you want to just get it running temporarily the usual trick is a black bin liner with the gas supply and feed tightly taped in, the engine will then suck what it wants.

Martin P
FFS!!!! Bomb in the making! Its people like you that kill innocent bystanders
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Old 17-06-11, 01:55 PM   #8
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I've use a converted pressure regulator with some success on a 'small power' engine. The spring is arranged to pull on the diaphragm via a rod attached to the centre, rather than pushing as it would do in the original regulator function.

NHH
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Old 17-06-11, 02:53 PM   #9
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Thanks Nick, that's interesting.

The item that I'm ideally looking for (because the engine is already running with one) is an IMPCO Garretson model KN regulator.

Martin.
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