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Mad Mac · 10-29-2022, 08:07 PM

I have just found one published reference:

"The Gas Adjusting Valve housing's outside threads are 1/8" 27NPT (Pipe). Use Caution not to cut threads deeper, as it is a pipe thread".

Does that mean the hole I can see is 1/8" NPT pipe thread? Or maybe its just the hole in an old dirty brass valve? I have measured the depth of the hole and it bottoms out at 30 mm (1.18") - would the hole be deeper if there was no brass valve?

10-29-2022, 08:07 PM	#5
Mad Mac Senior Member Join Date: Mar 2013 Location: New Zealand Posts: 412	Re: GAV valve seat I have just found one published reference: "The Gas Adjusting Valve housing's outside threads are 1/8" 27NPT (Pipe). Use Caution not to cut threads deeper, as it is a pipe thread". Does that mean the hole I can see is 1/8" NPT pipe thread? Or maybe its just the hole in an old dirty brass valve? I have measured the depth of the hole and it bottoms out at 30 mm (1.18") - would the hole be deeper if there was no brass valve?