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Quick Question gas line for stove

oldpops

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Hello all! Folks here have been great in answering my question and offering advice so I though I would ask another question. The gas fitting behind our stove looks like a 1/2" but the inlet fitting on the back of the stove is 3/4" inch. Would using a flex line gas hose with a 1/2" inch fitting on one side (the wall) going to a 3/4" inch fitting on the stove cause any issues? Does this set-up reduce the stoves operating ability? Would it be better to use a 1/2" diameter inch gas flex line with a step up/adapter to a 3/4" inch connection(to mate with the stove) be better to use? Or would it be better to use a 3/4" inch diameter gas flex line with a reducer/step-down to 1/2" inch? or does it matter?
 
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TurnipTruck

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Too small of a gas line will whistle, but you will need an uncommonly large range to draw sufficient gas to create noise.
The data plate will say what the max Btu draw is, match the flow capacity on the flex line.
I have a 3/4 line on an 80k BTU range and a 1/2” on a 35k Btu oven, IIRC.
 

KenC

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Find a btu to pipe size chart on the net. There are several. Then match the btu from the stove's label to that.

Here's one chart, propane but close.https://www.tarantin.com/blog/propane-101/proper-line-sizing
 

redmondjp

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Unless you have some mega-BTU commercial stove that you are going to run six burners and two ovens simultaneously, you will be fine.
 

dcg9381

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All of my hard gas lines are 3/4. Use appropriately sized 1/2 all over the place from the 3/4 hard line (after a valve, of course)
 

dfiler2

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A stove is a very low BTU appliance, there is nothing you could do with a combination of 1/2 and 3/4 pipe to make it not work the way it should.
 

Zeke

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hire a license gas plumber, Its the law in my state, no diy allowed on gas

Seriously, you need a licensed contractor to hook a flex connector to and existing gas line?
I can understand running the permanent gas lines, but just to connect?
I need to move there and hang out in the HD parking lot picking up quick money.

On the subject, you don't want to starve a gas stove. And of course we have no idea of what kind or what capacity we're talking about here, so there's no point in this discussion.

I have a Wolf and it came with its own regulator (matching a regulator to the stove is vital) and called for 3/4 supply all the way.
 

Meursault74

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Seriously, you need a licensed contractor to hook a flex connector to and existing gas line?
I can understand running the permanent gas lines, but just to connect?
Maybe he lives in New Jersey or Oregan. I hear they're not allowed to pump gasoline into their vehicles there. You can never be too careful.
I used to pump gas when I was in high school. I can tell you there was extensive training involved. Not everyone can make the cut. ;)

He'd better go to urgent care and have that paper cut looked at too. ;)
 

nadogail

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Many times the most appropriate answers to your questions depend on your location. Your local authority having jurisdiction makes the rules.
 

PoorUB

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On the subject, you don't want to starve a gas stove. And of course we have no idea of what kind or what capacity we're talking about here, so there's no point in this discussion.
I hooked one up that needed an 1-1/4" connector!
 

Mandres

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The one I replaced at my place was necked down to 3/8 for some reason. I used 1/2" on the new stove, the adapter is included in the hose kit, and it works great.
 

dcg9381

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Maybe he lives in New Jersey or Oregan. I hear they're not allowed to pump gasoline into their vehicles there. ;)

I'd carefully make sure I wasn't being watched, then I'd probably install my own flex line (after turning off the gas of course).
I might get my kneecaps broken by the local union or some of their associates, but I'm willing to take that chance....
 
OP
O

oldpops

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Thanks everyone! I live in southern California, and out here you can do pretty much anything -- as long as you pay and get a permit. All they want is $$.. In any event, I got a new 1/2" flex line and installed it fine. No leaks!!! Over the years I've installed many gas lines for stoves, dryers, and a few water heaters with no problems. My question was really about what size line should I use for a 48" inch wide/8 burner residential stove with double ovens. (I can say that one of the things I'm NOT good at is putting in words what folks need to understand my question or situation - my apologies). Anyway, I don't think the 1/2" inch flex line we are using is large enough. We turned on 7 of the 8 burners at the same fine with NO problems. However, when we added/turned on the 8th burner, we started a little whistling sound. I wanted to get a 3/4" inch but the local big-box stores didn't have any. The local HD did have a 5/8" inch line but didn't have any connectors to go from the 5/8" inch line down to 1/2" inch connector at the wall, or to go up from the 5/8" inch of the flex line to the 3/4" inch connector on the stove. Anyone here know where to get a 3'4" inch flex line that's at least 5 feet/60 inches long?
 

steel 35

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Maybe he lives in Organ. I hear they're not allowed to pump gasoline into their vehicles there.
Thinking My wife was 47 before she learned what side the filler was on, where to park, and what to say while handing a credit card.
Finally got the No.

Buy a gas heater and the carpet installers install if you like, Not here!
 
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Meursault74

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Thinking My wife was 47 before she learned what side the filler was on, where to park, and what to say while handing a credit card.
Finally go the No.

Buy a gas heater and the carpet installers install if you like, Not here!
Plumbing is easier for me. I already have most of the tools. I needed a section of carpet pad replaced and carpet glued back after I pulled up the carpet due to a water leak to dry matters out. I have no carpet gluing tools or the ability to buy a small section of padding that was needed. Buying the tools and the padding roll would have cost more than the service I needed. Finally found someone to do the small job plus some carpet cleaning to make it worth their while.
 

PoorUB

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Anyway, I don't think the 1/2" inch flex line we are using is large enough. We turned on 7 of the 8 burners at the same fine with NO problems. However, when we added/turned on the 8th burner, we started a little whistling sound.
How often do you run all eight burners, or for that matter even four burners at one time. Personally, I would call it good.
 

jkuro

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hire a license gas plumber, Its the law in my state, no diy allowed on gas
Never heard of anything like this. What state are you in?
A licensed plumber is anyone who registers with the local governing agency, pays his license fee and gives them his insurance papers.
Now he is a licensed plumber. Is he any good, no one knows!
 

brownbagg

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Gas Permits

Gas permits are required for all installations, repairs, and alterations to gas lines and gas systems. A master gas fitter must perform all work on gas lines and systems.
 

jkuro

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Again what state is this in and what is a master gas fitter?
 

Wrench97

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Here in SE Pa I'm suppose to have a licensed plumber install a faucet, replace a drain pipe and hook up the dryer vent properly....................................... let alone a gas pipe SHH!
 

jar944

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Seriously, you need a licensed contractor to hook a flex connector to and existing gas line?
I can understand running the permanent gas lines, but just to connect?

Oddly in some VA counties it's a building permit and inspection for a gas appliance replacement / hookup..
 

Meursault74

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Oddly in some VA counties it's a building permit and inspection for a gas appliance replacement / hookup..
can you walk into a local hardware store and buy gas pipe/ flexpipe/ fittings etc without being a certified gas pipe worker?

I wonder how many people actually get a permit and an inspection.

I don't keep up with codes/laws on this subject matter. I remember the first time I replaced a flex gas hose. I had to disconnect it from the dryer, as I had to repair the dryer (broken belt). The line kinked when I put it back and leaked. So, I shut off the gas again at the valve. Bought a new line and installed it and leaked checked it with some soapy water. If that task requires a permit and a "master" level gas worker, then it's nothing but a money grab.

How can they enforce something like this unless they don't sell the gas connections to the general public?
 

Wrench97

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can you walk into a local hardware store and buy gas pipe/ flexpipe/ fittings etc without being a certified gas pipe worker?

I wonder how many people actually get a permit and an inspection.

I don't keep up with codes/laws on this subject matter. I remember the first time I replaced a flex gas hose. I had to disconnect it from the dryer, as I had to repair the dryer (broken belt). The line kinked when I put it back and leaked. So, I shut off the gas again at the valve. Bought a new line and installed it and leaked checked it with some soapy water. If that task requires a permit and a "master" level gas worker, then it's nothing but a money grab.

How can they enforce something like this unless they don't sell the gas connections to the general public?
They nail you when you sell the house and do next occupancy inspection before the new buyers move in.
Back in the early 80's they made the seller rip out the PVC water lines in my house and replace with copper because PVC was not in the code at the time and was not in the code here until about 2005.
 

Firebrick43

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can you walk into a local hardware store and buy gas pipe/ flexpipe/ fittings etc without being a certified gas pipe worker?

I wonder how many people actually get a permit and an inspection.

I don't keep up with codes/laws on this subject matter. I remember the first time I replaced a flex gas hose. I had to disconnect it from the dryer, as I had to repair the dryer (broken belt). The line kinked when I put it back and leaked. So, I shut off the gas again at the valve. Bought a new line and installed it and leaked checked it with some soapy water. If that task requires a permit and a "master" level gas worker, then it's nothing but a money grab.

How can they enforce something like this unless they don't sell the gas connections to the general public?

When I lived in SoCal, they paid bounties to the trashman. If you had them pick up a water heater the trashman would report it to the county building office. They would then check if you had a permit or not. If you didn't, they paid him 50 bucks or something and then went after you for not getting a permit. Therefore, many just dumped water heaters on the side of the road in unpopulated stretches of road.
 

Meursault74

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They nail you when you sell the house and do next occupancy inspection before the new buyers move in.
Back in the early 80's they made the seller rip out the PVC water lines in my house and replace with copper because PVC was not in the code at the time and was not in the code here until about 2005.
we're not talking about the same thing. If I replace a flex line with another one, what's the difference if they're the same exact line?
 

Meursault74

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When I lived in SoCal, they paid bounties to the trashman. If you had them pick up a water heater the trashman would report it to the county building office. They would then check if you had a permit or not. If you didn't, they paid him 50 bucks or something and then went after you for not getting a permit. Therefore, many just dumped water heaters on the side of the road in unpopulated stretches of road.
That's seems funny to me.

Not a concern for me. There are a few scrap-metal guys that roam my neighborhood. They'll pick it up. No need to call the city.
 

Meursault74

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There was/is a lot of funny stuff going on in SoCal.
I guess I don't notice.

Few years ago, I replaced my dishwasher. Ordered it from Homedepot. Delivery guys seemed a little shocked that I didn't order the connection service or have them haul away the old one (extra charge). Mine is hardwired electrically. So I knew they "couldn't do it" anyway. I did the install myself. I left the old unit out in the alley............. friendly neighborhood metal scrapper took it away in less than 24 hrs.
 

PelicanPines

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When I lived in SoCal, they paid bounties to the trashman. If you had them pick up a water heater the trashman would report it to the county building office. They would then check if you had a permit or not. If you didn't, they paid him 50 bucks or something and then went after you for not getting a permit. Therefore, many just dumped water heaters on the side of the road in unpopulated stretches of road.
Same deal in NJ... water heater bounty !!!
 

rooster59

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County next door was trying out the permits for faucets, water heaters (gas or electric), etc. It was just a way to “update” your tax assessments. They just wanted to know how many bathrooms, etc you had. county gave up after no one was cooperating.
 

Meursault74

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Same deal in NJ... water heater bounty !!!
Good to know the bureaucrats are doing an excellent job all over the county.

We have household hazardous waste pick up by request that I use. I wonder if they're going to report me to Mr. Goodwrench for my used oil that I turn in.

Good to know about the water heater bounty for the future. If the scrappers don't ever take it, I'd cut it up and put in my trash can little by little. I can do spite very well.
 

PelicanPines

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Good to know the bureaucrats are doing an excellent job all over the county.

We have household hazardous waste pick up by request that I use. I wonder if they're going to report me to Mr. Goodwrench for my used oil that I turn in.

Good to know about the water heater bounty for the future. If the scrappers don't ever take it, I'd cut it up and put in my trash can little by little. I can do spite very well.
I did some work with animal control on house calls. Our direction was keep your eyes open to everything. Write it all down the moment you are back in the truck. This all predates 9/11. We had someone report their X-BF for having a Gator in his basement. When the team went to get the gator... it Turns out... he also had a rattle snake, pipe bomb factory and canon in his basement as well. Fun weekend.
 

Firebrick43

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I did some work with animal control on house calls. Our direction was keep your eyes open to everything. Write it all down the moment you are back in the truck. This all predates 9/11. We had someone report their X-BF for having a Gator in his basement. When the team went to get the gator... it Turns out... he also had a rattle snake, pipe bomb factory and canon in his basement as well. Fun weekend.
The cannon is legal to own if muzzle loaded. The rest not so much
 
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