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Oil Field Engines & Related Equipment

Myrick Natural Gas Regulator


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  #1  
Old 04-22-2016, 08:59:52 PM
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Brian Lynch Brian Lynch is offline
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Default Myrick Natural Gas Regulator

I'm rehab-ing this 1910s-20s vintage Myrick regulator to put on my 1914 4 hp Eclipse type H. Most everything has come apart with a vengeance. As you can see, there were prior attempts made to free the valve chest nut. Somebody must have been given a new hammer and chisel for a birthday. That did come out after much preaching of the Heat & Kroil gospel. The only casualty to report is the valve link that hooks the diaphragm to the valve. It twisted off after about 2 hours of work. Looks like lathe & mill work are in the future for this. The valve seat is rusty from mouse piss, spiders and whatever else made it in there. It's a 45* seat so that's an easy one. I did find that what was left of the rubber diaphragm was not a formed one, but is flat. I've got that covered. The actual travel from valve off-seat to on-seat is only about 0.125". Some more glass beading, machine work & paint. The diaphragm tension spring and keepers were gone. Must have been a low gas pressure well.
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Old 04-22-2016, 09:07:31 PM
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Default Re: Myrick nat. gas regulator

A few more pix to give perspective.
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Old 04-30-2016, 07:18:42 PM
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Default Re: Myrick nat. gas regulator

The regulator is "sorta kinda" done. All the machined surfaces were touched up on a surface grinder and the valve seat was recut, lapped in and leak tested. It seems to work but hangs up once in a while. I need to get a few more ounces of spring pressure on the diaphragm & valve assembly. I had to guess at what the original pressure differential spring looked like. Since I'm running this against a primary regulator, a heavy spring isn't necessary to make it work. Here's my Question Do any of our fellow OAF's here have one of these apart? I'd like to know the length, wire diameter and number of coils in an original spring.
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Old 05-02-2016, 04:29:40 PM
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Default Re: Myrick nat. gas regulator

Brian, I tripped over one in my spare parts room and I thought of your post. I just tore it apart to see the spring. The wire diameter is .250. The length of the spring is about 2 11/16. The ID of coil is .750 with the OD around 1.265. Starting at the flat part of the spring, there are 7 1/4 turns. It is a fairly stout bugger. I'd hate to wind that one.
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Old 05-02-2016, 10:03:25 PM
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Default Re: Myrick nat. gas regulator

Wow Tom, they must have the suspension springs out of old narrow gauge railroad boxcars for those! That is a very stout spring. Thank you for taking the time to tear into your regulator and get the dimensions. Now I know what to look for.
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Old 05-03-2016, 09:32:51 AM
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Default Re: Myrick nat. gas regulator

I have had both of mine apart and the spring is a good bit more stout than I expected it to be. Did you replace the diaphragm? If so what is the material mine is starting to seep.
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Old 05-03-2016, 08:22:00 PM
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Default Re: Myrick nat. gas regulator

Diesel, I had a square-ish chunk of rubberized canvas that was just a big enough to replicate the original. I bought a piece that was about 24" X 24" years ago and to be honest, can't remember where. I have seen several types at the McMaster - Carr website.
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