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Author Topic: Orifice size difference from Propane to Natural gas  (Read 255 times)

Online Thorning

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Orifice size difference from Propane to Natural gas
« on: October 29, 2020, 02:46:07 PM »

I have lost my chart that gives the size of the orifice  for natural gas versus propane fuel. Can someone point me in the right direction ? I need help ASAP.

Offline Blaiser

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Re: Orifice size difference from Propane to Natural gas
« Reply #1 on: October 30, 2020, 06:46:39 AM »
Oriface #54 is for PROPANE


Oriface #55 is for BUTANE

Online Thorning

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Re: Orifice size difference from Propane to Natural gas
« Reply #2 on: October 30, 2020, 07:37:04 AM »
What is the size of the orifice for Natural gas ?

Offline Blaiser

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Re: Orifice size difference from Propane to Natural gas
« Reply #3 on: October 30, 2020, 08:13:48 AM »
Off the top of my head I think its 44 or 45


Offline Blaiser

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Re: Orifice size difference from Propane to Natural gas
« Reply #4 on: October 30, 2020, 08:27:57 AM »
Thorning I was close it is actually #42


Here is a link: https://www.youtube.com/watch?v=7MC2xuQqQW0

Online Thorning

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Re: Orifice size difference from Propane to Natural gas
« Reply #5 on: October 30, 2020, 08:39:42 AM »
Thanks for your  info. I have changed many of them usually from propane  to natural gas. If I dont have the natural gas size I use a propane size item and drill it out to the #42 size. The closest size is 3/32 which is.093" dia for natural gas as compared to .055" dia for propane according to my old info.