What size is the fitting on a BBQ hose?
Note: The grill must have a matching SAE 3/8” male flare (standard on most grills), measure to be sure. Due to the SAE standard, the actual dimension of the male SAE 3/8” fitting is much larger, approximately 5/8” (the inside hose diameter is 3/8”).
Weight | 12 lbs |
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Dimensions | 12 × 12 × 5 in |
Size | 3/8" x 10', 3/8" x 20', 3/8" x 25', 1/2" x 10', 1/2" x 20', 1/2" x 25' |
Portable Propane Cylinder
This 1"-20 fitting attaches to a hose with a 1"-20 female connector. So, to recap, the best way to identify what propane fitting you have or need is to look at its location. Determine if it's a male or female fitting and what size it is, if more than one size is available.
30' Hose (3/8" Diameter) Natural Gas or Propane — BBQing.com.
On average 20mm is the correct size, if you get a quote using a smaller pipe ask why...he may only be giving you a cheap quote to get the work!! Once you have determined the BBQ you want and the rating, a good Gas fitter will add up all your appliances that run on gas to work out how big the pipe should be.
Common sizes of flare fittings are 3/8 inch, 1/2 inch, and 5/8 inch. Match flare fittings to the outside diameter of the soft copper you're connecting to. Note: The photo below shows a soft copper line that's kinked and should be replaced.
For our natural gas hoses, the measurements are as follows: 3/8” Hose has a 5/8” O.D. ½” Hose has a ¾” O.D. ¾” Hose has a 1” O.D.
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.
Acme fittings are typically found on newer propane containers, and differ from POL valves in size and their use of external threads. Acme fittings can be hand-tightened. They also have a built-in safety mechanism that prevents propane from leaving the tank unless it's attached to a device.
Size: 1/4" NPT Male Thread, connect your propane fitting or the QCC refill adapter. Easy to install. With 1''-20 Female throwaway cylinder fitting.
Are all propane connections the same?
As a result, specific propane fittings such as t-valves are usually a standard size and thread. This allows them to be connected to most propane cylinders and used for multiple applications at the same time, as long as the regulator for the system allows the pressure to remain consistent enough.
Garden hose connectors usually come in 3/4 or 5/8-inch. It is according to the inside diameter of the hose. Garden hose fittings also vary accordingly and the most popular size is 3/4-inch or 11.5NH. This size is also perfect for commercial purposes.

The US standard was defined by NFPA 1963, "Standard for Fire Hose Connections", then later by ANSI-ASME B1. 20.7, which specifies 1+1⁄16 inches (27 mm) diameter straight (non-tapered) thread with a pitch of 11.5 threads per inch (TPI).
The following is a list of the sizes for each of the Natural Gas Quick Disconnects: ¼” Female Quick Disconnect – ½” Socket I.D. 3/8” Female Quick Disconnect – 5/8” Socket I.D. ½” Female Quick Disconnect – ¾” Socket I.D. ¾” Female Quick Disconnet – 1” Socket I.D.
How To Measure the Diameter Of Any Hose - YouTube