Martin, I hope you are learning something here. 
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Good morning Marcel. I usually avoid Roberts posts but when he intentionally misinforms a community of home inspectors I need to step in. What we may have now is home inspectors running out there and calling out malleable iron fittings in a CSST system.
The iron fittings are so dangerous the CSST manufacturers (Gastite) comes up with iron manifolds 
Maybe Robert can look at the manifold and tell me if it’s a right hand thread or a left-hand thread.
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Glad you straightened that up. 
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Best thing to do with WAFI is put him on ignore!
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I have been researching a few manufacturers. Most have brass couplings which they sell with their pipe. No mention of iron couplings, except for manifolds or repairs. Then it states the following. (And of course, as you read through their manuals, multiple photo’s of CSST connected to malleable iron are shown).
My conclusion? No problem.
Page 74
gastite_di_guide.pdf (5.4 MB)
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Look Martin, I stated the union comes in both right and left hand threading. You sir were looking at anyway to misinform. Grow up. It’s pathetic. BIS UL 1/2" pipe fitting Thailand.
What effect would a dielectric fitting (one that has an isolating plastic ring) on bonding in the scenario?
Since this is the back-jacketed CSST, it does not require bonding as I understand it. If it were the yellow jacketed type, I would say that each section may need to be bonded or a jumper installed.
How did you come to this “understanding?”
The 2018 and 2021 IFGC and IRC recognize advances made by CSST manufacturers to produce a more robust, arc-resistant, (black) jacket system that does not require the direct bonding required for traditional (yellow) CSST products.
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Oklahoma rules state this:
(E) the presence of any shade of yellow corrugated stainless steel tubing
(“CSST”) flexible gas piping observed during the inspection in which
the inspector is not required to identify concealed conditions, components not
readily accessible, or any other item excepted from inspection pursuant to
OAC 158:70-1-3. If any shade of yellow CSST flexible gas piping is observed,
the home inspector shall notify the client, in writing, as follows: “Manufacturers
believe the product is safer if properly bonded and grounded as required by the
manufacturer’s installation instructions. Proper bonding and grounding of the
product can only be determined by a licensed electrical contractor.”
Not all Manufactures of “Black Sheathed” CSST include a bonding conductor in their product.
Note: Ref. the following pic I marked in RED, and Fig.5-2 that Brian posted
.
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Good stuff! Thanks. (I was looking at 2015, yup…the new code differs)
Here is an interesting point inspectors can use to identify.
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If it is black, it better have one of the two arc-resistant qualities…
Arc-resistant (black) CSST is characterized by a thick black jacket or a multi-layer black jacket system. The single-layer black jacket is designed to absorb arcing energy caused by a lightning strike preventing perforation of the tubing wall. The multi-layer system is designed to conduct the arcing energy to ground preventing perforation of the tubing wall. Both arc-resistant jacket systems provide equal protection along the entire length of the piping system, and the extra bonding described in this CodeNotes is not required.
Can you see this conductor? Or…are pipe marked with “AR” the only way to verify?
On the LEFT side only.
NOT visible in the photo.
So… MY rule is… if it’s NOT visible, it doesn’t apply!!
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From the same article. Pay attention to the first line as this is where a majority of local codes probably are (IFGC doesn’t get accepted quickly).
"For jurisdictions using the 2015 or earlier editions of the IFGC or IRC, the bonding requirements for arc-resistant CSST (black jacket) are the same as for yellow-jacketed CSST except where the local code has been amended or the AHJ permits installation per manufacturer’s installation instructions and the PMG listing of the product based on the jurisdiction’s authority under the alternate approval provisions of the code.
Note: Black jacketed CSST piping that is certified as arc-resistant is marked with the letters “AR” (Arc-Resistant) indicating compliance with the CSA/ANSI LC-1 standard. Inspectors should note the presence of this marking when inspecting for compliance with IFGC Section 310.3/IRC Section G2411.3."
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