What Size of Natural Gas/Propane Hose and Quick ...

So you might be connecting a new grill, patio heater, or fire table - whatever the case may be - and you're thinking, "What size should my gas hose and brass fittings be?" Well, you're in luck because here at Barbecues Galore, we pride ourselves on having expertise in gas fitting because we get it... this type of stuff is confusing. Together, with some proactive article reading, we can figure out what you need.

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Common problems with measuring your gas fittings

Many people unknowingly buy the wrong size of fittings for their natural gas or propane hose because they don't know how to measure it; or more accurately, they don't know which part to measure. 

There are three commonplace measurements people take, but only one of them is right. First, there is the outside diameter (OD), the Nominal Pipe Size (NPS), and the inside diameter (ID) of the hose or fitting. 

The measurement you want that corresponds with the name of your gas hose is the inside diameter. You can remember this because ID in this case means "inside diameter", but in many other case means "identification." For example, a 3/8" LP/NG Hose can be identified as having the inside diameter of 3/8."

Now for the tricky part:

How to measure a quick disconnect nipple and coupler

Your keen mind might have thought, "If the inside diameter is what we are measuring, how could the 3/8" quick disconnect have the same inside diameter of the 3/8" hose if one goes in the other?" Well my friend, it's because the world (of gas fitting) works in mysterious ways... but that's why we're here.

Fittings get their name based off of the hose they fit with. That being said, you're right - the inside diameters would not be the same. Thus, the inside diameter on the female end of the Quick Disconnect Nipple would have to be more closely similar to the outside diameter of the male end of your gas hose. For example:

Due to this, we advise you to make sure you know the proper measurement of your natural gas or propane hose first. With that, you'll be able to know the measurements of the Quick Disconnect Nipple and Coupler that you'll need. However, if it's the hose that you're looking for, find which hose is needed and we've got them in 5', 10', 15', and 20' lengths. 

To make your life easy, we also have them in pre-assembled kits, which you can find by clicking here. If you want to explore more, you can get the correct parts you need from our site by clicking here. You can also visit or contact any one of our five stores across Canada. 

 To continue learning, watch these videos here: 

Looking for more grill tips to finally be the pit master you were meant to be? Remember to stay tuned to our Master Your Grill blog.

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Barbecues Galore has the best selection of barbecues, grilling accessories, patio furniture, outdoor heating supplies, and fireplaces in Canada. We pride ourselves on providing you with the best backyard experiences and home comfort possible. With locations in Calgary and the GTA, you can visit us in store or shop online. North Calgary Store: (403) 250- | South Calgary Store: (403) 258- | Burlington Store: (905) 639- | Oakville Store: (905) 844- | Etobicoke Store: (416) 546-

Gas fittings are a unique brand of hardware because they only serve one single purpose: connecting gasses with the appropriate lines. These are the fittings that you would see when working with gasses like flammable propane or hazardous phosgene. The primary thing that sets gas fittings apart from other types of fittings is their thread. They are reverse threaded so that gas cannot accidentally be connected to air, water, or vent lines.

When it comes to connecting gas fittings with their appropriate lines, there are a number of potential uses. They can connect to gas mains, propane tanks, residential gas lines, explosives, and more. However, you need to know which fitting types are appropriate for your specific needs. 

Fitting Types

Selecting the right gas fittings depends on understanding when to use which type and for what application. There are more than a dozen different styles of gas fittings that you may need to refer to when working with gas lines. Here is the breakdown of a few of the more common types of gas fittings: 

• Adapter

  : Connects two pipes together that are not the same size through welding, soldering, or threading.

• Coupling

  : Connects two pipes that are similar to each other through welding, soldering, or threading.

• Sleeve

  : Connects two pipes together via fasteners such as screws &#; best used when you need a faster installation time.

• Union

  : Connection that is easily disconnected without the need for cutting.

• Cap

  : Covers the end of a pipe or attaches to a male connection.

• Plug

  : Covers the end of a pipe or attaches to a female connection.

In addition to the types of gas fittings that are used to join two different pipes running in the same direction, there are also fittings to change directions. These include elbows, tees, wyes, and cross-connections. 

Getting The Right Size

Once you know what type of fitting you need, it is important to determine the size. There is no such thing as a one-size-fits-all gas fitting. Instead, you must refer to the size of the pipe that you are going to be connecting to. Based in either millimetres or inches, this size will allow you to choose a connector that will fit snugly. 

Keep in mind that purchasing a connector that is either too big or too small will adversely affect the overall connection. The seal that should form could leak instead with the installation of an undersized part. 

Selecting Materials

Gas fittings can be made from a number of materials like aluminum, brass, cast iron, copper, steel, stainless steel, and different types of plastics. Make sure you understand exactly what type of gas you will be working with so that you can select the right materials. Choosing the wrong material for a particular gas could lead to corrosion and leaks.

Choosing the right gas fittings for your project should be taken seriously. With this short guide, you can start researching exactly what your project calls for. If you have any questions, your Winnipeg heating professional, Provincial Heating and Cooling, is ready to help answer your questions!

If you want to learn more, please visit our website LPG Valves.