Understanding Garden Hose Threads
Garden hoses have been around for centuries, and they remain a popular tool for watering plants and cleaning outdoor spaces. However, not all garden hoses fit the same connectors, and it can be frustrating when trying to find the right size. Garden hose threads are measured by the number of threads per inch, which is referred to as TPI. The most common sizes are ¾ inch and 5/8 inch for residential use.
Types of Garden Hose Threads
There are two types of garden hose threads: the National Hose Thread (NHT) and the Garden Hose Thread (GHT). The NHT is used for fire hoses and is different from the GHT, which is used for garden hoses. The GHT is a straight thread, meaning the threads are not tapered like the NHT.
Tapered Fittings
One of the confusing aspects of garden hose thread size is the tapered fittings. These fittings are designed to create a tight seal between the hose and the connector, but they can also make it difficult to determine the correct size. For example, a ¾-inch garden hose with a standard coupling has a 1-inch diameter at the thread. However, the taper of the threads reduces the diameter to ¾ inch at the base of the thread.
How to Measure Garden Hose Threads
The best way to measure the thread size of a garden hose is to use a thread pitch gauge. This tool can be bought at your local hardware store or online. To use the gauge, line up the threads of the hose with the corresponding slots on the gauge until you find a match. The number on the gauge will tell you the TPI of the hose.
Measuring Without a Gauge
If you do not have a thread pitch gauge, you can measure the threads manually using a ruler. First, measure the outside diameter of the male end of the connector. Next, measure the distance between the threads in a straight line. Divide the distance between the threads by the diameter of the connector to get the TPI.
Common Garden Hose Thread Sizes
The most common garden hose thread sizes are ¾ inch and 5/8 inch, but there are other sizes as well. The following is a list of various garden hose thread sizes and their TPI:
- ½ inch: 14 TPI
- ¾ inch: 11.5 TPI
- 1 inch: 11.5 TPI
- 1¼ inch: 11.5 TPI
- 1½ inch: 11.5 TPI
Metric Sizes
In addition to the standard sizes listed above, there are also metric sizes. The most common metric size is M22x1.5, which is equivalent to ¾ inch. Other metric sizes include M18x1.5, M20x1.5, and M24x1.5.
Choosing the Right Garden Hose Thread Size
When choosing the correct garden hose thread size, it is important to consider the intended use of the hose. If you plan to use the hose for watering plants, a ¾-inch hose will typically provide enough water flow for most residential applications. However, if you plan to use the hose for pressure washing or other high-volume applications, a larger hose may be necessary.
Matching Connectors
It is also important to match the connectors to the hose. If the connectors do not match the thread size of the hose, it will not create a tight seal and water will leak out. Make sure to check the thread size of both the hose and the connector before purchasing.
Conclusion
Finding the correct size for a garden hose thread can be frustrating, but with the right tools and knowledge, it can be a simple process. Remember to measure the threads with a gauge or ruler, and match the connectors to the thread size of the hose. With these tips, you’ll be able to find the perfect fit for your garden hose and enjoy hassle-free watering and cleaning.