54 votes
Accepted

How to convince plumber that there is a gas leak?

The other answers here are good from a technical point of view about how to verify a leak, but to answer the question of "how to convince a plumber", I'll second a comment by @manassehkatz: ...
TylerW's user avatar
  • 1,173
41 votes
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Why not put pipe dope on female thread?

The pipe dope on the inside threads would be mostly pushed out of the threads into the fitting. Now that blob ends up migrating to regulators and valves causing failures. If only applied on the male ...
Ed Beal's user avatar
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39 votes
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How to (safely) permanently turn off natural gas?

I would not take the pipes out because of the demo cost and the fact that having them available may increase the value of the home for resale. Call the gas utility and have the service turned off and ...
Ed Beal's user avatar
  • 103k
29 votes
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Disconnecting a gas stove (New Zealand)

With a little more research and a better photo of the floor connection, it turns out that the floor connection had the mark “BS669”, which means its a bayoneted valve that auto-seals on disconnection. ...
Moo's user avatar
  • 676
26 votes
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Is my plan for fixing my water heater leak bad?

If the water on the floor is from the water heater I would fix that problem before I do anything else. If it is coming from the tank then it probably needs replaced. You can raise the tank as high as ...
d.george's user avatar
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22 votes
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Safe amount of leaking from natural gas pipes

The Uniform Mechanical Code section 1314 asks you to test at 10psi or more. It defers to your Authority Having Jurisdiction (AHJ) on what a leak is, though it does specify 'no perceptible loss of ...
KMJ's user avatar
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18 votes
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Is digging with a shovel near gas lines dangerous?

I speak as a former engineer for a utility that provides both gas and electricity. Gas lines are typically metal or plastic. If plastic, they're very likely thick enough to withstand most hand digging ...
pdtcaskey's user avatar
  • 324
17 votes

How to convince plumber that there is a gas leak?

You have to use a lot of liquid detector and large leaks can blow right through without making bubbles; however, typically a leak this large would be easily detected by the Mark-I human sensors you ...
Jimmy Fix-it's user avatar
  • 35.8k
17 votes

Why not put pipe dope on female thread?

The idea that a fillet of pipe dope as shown in the figure would enhance sealing is flawed. The pipe dope is a semi-liquid; it won't stay in place unless held there by some mechanical force. The ...
Greg Hill's user avatar
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17 votes
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Is it okay to notch 1.5" on the bottom of beams in basement ceiling

Notch depth is 1/6 of joist depth, maximum. No notches at all in the center 1/3 of the joist. Image source, no endorsement implied. Holes, of 1/3 joist depth or less in diameter may be placed at ...
Ecnerwal's user avatar
  • 215k
16 votes
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How can this pool heater gas line be disconnected?

You are looking at a union, with an elbow to the left and a valve to the right. Put one wrench on the biggest "nut". Put the other wrench on the smaller "nut" immediately to the right of it - you'll ...
Ecnerwal's user avatar
  • 215k
16 votes

How to convince plumber that there is a gas leak?

Try to fan the area with fresh air to the point the detector detects nothing then immediately use the detector to zero in on the area where the gas begins to appear. Try using saran wrap to isolate ...
jay613's user avatar
  • 37.9k
14 votes

How can this pool heater gas line be disconnected?

...natural gas...   ...I'm not sure what the different parts are here... Those two statements together equal "call a gasfitter". Removing the appliance will leave the gas line unsupported, and ...
peter's user avatar
  • 141
13 votes

Is my plan for fixing my water heater leak bad?

No gas shut off for either line, flex is not suitable for a stationary appliance unless it's approved CSST, duct tape on the flue, draft hood is crooked, pressure relief should terminate in a ...
Joe Fala's user avatar
  • 6,364
12 votes

Doping threaded gas pipes -- which threads are the "last" threads?

It's been awhile since I worked with gas pipe, but my understanding was that your area marked as (1) are the last 2 threads. The reason is so there is no ribbon or tape hanging off the threads that ...
RMDman's user avatar
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12 votes

Natural gas fireplace with included "smart" thermostat and DIY added "dumb" thermostat as a power outage failsafe

There are plenty of millivolt wall and floor furnaces which use a pilot light, thermopile and millivolt thermostat. They are typically called "Empire style" and are made by Williams and ...
Harper - Reinstate Monica's user avatar
11 votes

Is my plan for fixing my water heater leak bad?

There is a reason most countries regulate gas-related equipment strictly, because they don't want buildings to explode. If there is no electricity or gas involved, fix it! If it's under - let's say - ...
Nyos's user avatar
  • 219
11 votes

Gas furnace takes like 2-5 minutes from ignition to blower start. flame also burning yellow/orange

The flame should be blue with some orange tips, if not it is more than likely a serious problem. From your description it does not have enough oxygen - thereby depositing a lot of carbon on the inside,...
Gil's user avatar
  • 7,001
11 votes

Understanding the risks surrounding empty tanks & containers (propane, natural gas, septic, etc.)

The basic one common to all is that they can accumulate gasses you can't breathe, or smell. Without active ventilation (a blower, run for some time before entering and all the time a person is inside) ...
Ecnerwal's user avatar
  • 215k
10 votes

How do I determine whether a permit is required for a new gas line?

You would need to find out who the authority having jurisdiction is. Often time, it is the city, county, or township where you are located. In some cases, it might be the state as well (in MN for ...
PhilippNagel's user avatar
  • 4,957
10 votes

Does a gas pressure test lose pressure without leaks?

1/10th PSI (1:50 change) might well be temperature-related (the compressor heats air as it compresses it, and that cools down to room temperature when in the pipe) but simply waiting longer should ...
Ecnerwal's user avatar
  • 215k
10 votes
Accepted

What is a safe procedure for removing natural gas pipe after full service disconnect (meter removed, house intake capped)?

Any pressure in the pipes disappeared instantly when the meter was removed. Disconnected gas piping poses no special hazards, it can be removed and disposed of just like any other steel piping. Any ...
kreemoweet's user avatar
  • 3,579
9 votes

How to convince plumber that there is a gas leak?

You haven't mentioned whether this is natural gas or propane. If natural gas, then use the analog dials (or digital read-out) on your gas meter. Hopefully your meter will have a dial or indication for ...
Greg Hill's user avatar
  • 30.6k
8 votes

Is digging with a shovel near gas lines dangerous?

Just an experienced digger answer here... I worked for landscaping companies in my teens and while some of the lawns were marked, many were not. Basically you want use a tipped shovel - not a ...
DMoore's user avatar
  • 48.3k
8 votes
Accepted

What size black iron pipe should I use for a 45,000 BTU attached garage heater?

If the new heater would "home run" its supply pipe all the way to the meter then that pipe could be sized in isolation, but you've described a scenario in which the new heater would branch ...
Greg Hill's user avatar
  • 30.6k
8 votes

How to convince plumber that there is a gas leak?

First convince yourself. Soapy water can be tricky - you may not see small bubbles in hard to observe places. The right amount of soap in the water is tricky as well. Try to hear the leak. You may ...
fraxinus's user avatar
  • 3,149
8 votes

Is there a way to remotely control gas valve?

Yes, there are electronically controlled gas valves. A better idea might be to install a "grill timer". It's like a kitchen timer that you twist to set the time, but instead of ringing a ...
longneck's user avatar
  • 21.3k
8 votes
Accepted

How does one secure black pipe gas plumbing to an exterior wall?

Yes a two-hole strap like the one you've shown is a normal way of securing a pipe. When you tighten the mounting screw the strap will easily bend so that its ears are held down firmly against the ...
Greg Hill's user avatar
  • 30.6k
8 votes
Accepted

Is my plan to extend a kitchen gas line reasonable?

Your plan is fine, but you won't find a 13' pipe. Just add 8 feet to the existing 5' pipe (or use 10' and 3' pipes). Rectorseal™ is a brand name, not a product. You'll want to use "pipe joint ...
isherwood's user avatar
  • 138k
8 votes

Is it dangerous to put expanding foam in home heater ducts?

Use a 10" duct cap to seal the disused duct opening correctly. Since you mention diameter, I've shown a round one. image source https://images.homedepot-static.com/productImages/0dd0da23-e656-...
Ecnerwal's user avatar
  • 215k

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