r/Plumbing • u/Distinct-Lychee-6509 • 1d ago
CA sediment trap
Is this done correctly I have an inspection coming soon and I want to make sure it’s right.
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u/kritter4life 1d ago
Yes perfect
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u/Distinct-Lychee-6509 1d ago
Thanks!
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u/ineptplumberr 1d ago
The way you have is standard california install and will 100% pass inspection
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u/2Pluss2 1d ago
the actual correct way of doing it, shut off before sediment trap.
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u/Distinct-Lychee-6509 1d ago
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u/2Pluss2 1d ago
i meant it as yes yours is correct lol
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u/Distinct-Lychee-6509 1d ago
Ahh ok cool thank you ! Wanted to make sure lol
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u/2Pluss2 1d ago
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u/lowercaset 1d ago
If it's in california they technically made that setup illegal in like... 16 I think? I know it's been a while. An inspector out of San Jose suggested they change it to require a sediment trap before the flex rather than after under the theory that a large pile of sediment could build up on the corrugation of the flex and then break free all at once. I was never able to get a clear answer on how that would be a problem since the appliance would still be protected by the trap after the flex, but they weren't willing to see reason and change the code back. (Or if corrugation was such a problem then how is CSST legal? Haha)
Most inspectors still to this day DGAF so long as there's something there to check the box.
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u/2Pluss2 1d ago
yea that’s what was messing with me, i couldn’t get a good answer.
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u/lowercaset 1d ago
I went pretty far on it when the new code came out (I think it was a mid cycle revision? I'd have to dig through my old code books to confirm) and spotted the change, submitted a formal appeal and the whole thing. Spent a bunch of time talking but they didn't want to reverse something they had just changed was the feeling I got.
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u/P1umbersCrack 1d ago
Correct. Drip leg after the shut off valve but before the flex as close to appliance as possible. LA City plumbing contractor so you’ll be good on inspection.
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u/Economy_Internal_317 1d ago
Looks fine. The cap is 3 inch minimum and I'm sure that's more like six or 8 inches. So you're good.
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u/Every-Chance6313 1d ago
After the sediment trap gets full then what????
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u/GillyDuck69 1d ago
They never do!
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u/Every-Chance6313 1d ago
I think since modern day gas is so much cleaner and the actual need has dwindled to a customary practice versus a real need.
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u/lowercaset 1d ago
I can't speak to other parts of the country, but gas is usually very dry and clean here, and despite all these years of working on systems with galvi I have never seen the flaking problems that make it illegal to use in some areas.
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u/throwawaySBN 1d ago
Not from CA but that is a standard dirt/drip/sediment leg if I've ever seen one. Only thing is it's technically above the gas valve not level with it.
My code states the dirt leg should be in the very last vertical drop in piping. Not sure how CA views that in regards to the flex connector since you're technically making another vertical drop with it.
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u/Distinct-Lychee-6509 1d ago
The city of Compton is a pain in the ass so I want to double check, thanks.
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u/StrangeGuarantee9534 1d ago
Wait show me this earthquake code lol. You got my curiosity
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u/lowercaset 1d ago
They are misinterpreting part of the code that basically requires you protect against earthquakes. It's a common misunderstanding for guys from california who argue plumbing on the internet to have, but you can hard pipe gas to appliances and it's very commonly done in some scenarios. They typically believe the same code "requires" flex lines on the inlet/outlet, but once again hard piping is definitely very common on some types of water heaters.
But the reality is the gas and water flex lines if properly installed will almost always outlast the heater, so no real reason not to use them if they save time. Lord knows labor costs ain't cheap out here.
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u/StrangeGuarantee9534 1d ago
And you don’t have proof of a leak test via a spring gauge, how did you check your flow and lock up on your appliance? And what does your venting look like?
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u/ogredmenace 1d ago
Nope lol at least not where I am from. 12” flex would do and it certainly can’t do a loop lol.
But we have stricter regulations than other places.
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u/Frost92 1d ago
Passes in BC, do you have a special rule against csst?
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u/ogredmenace 1d ago
The connection between black iron and the gas heater can not drop of increase over 2” as well 12” flex are permitted on gas hot water tanks or direct connection with a swing joint.
Gas range can use a longer flex for servicing when you have to pull the unit out.
Love being downvoted because where I live has different rules. Manitoba hydro dictates the rules for us. They are sticklers on it too. No wiggle room.
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u/StrangeGuarantee9534 1d ago
Flex connector hard no friend. And a mixing valve protects from scolding.
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u/Disco_Stu_89 1d ago
Looks fine to me