On the previous page, we ended page one talking about the various methods of connecting a connector to an air tool. The methods of attaching a connector to an air tool or air line are shown in the photo below...items 1-3. These were discussed on the previous page.
The methods of installing a connector into an air tool or onto an air line are common, and are shared by many manufacturers of connectors.
Item 4 in the photo below is an issue to be considered.
The right side shape and size of the connector in the photo above is proprietary. This means that the design of it is unique to a specific manufacturer's brand or it is built to emulate another company's coupler design.
This is the part of the connector that has to match the size and shape of the inside of the mating coupler or you may not be able to insert the connector into the coupler at all. Or, if you can insert the connector and it is the wrong design, at best the connection will leak, and at worse, the connection will blow-off, usually at the worst possible time.
It really is unfortunate for the compressed air users that all connectors are not manufactured with the same coupler configuration.
There are many different styles and sizes of connector configurations available in North America, and around the world, and, as noted, not all are interchangeable. As a result, you have a decision to make when it comes to selecting connectors, and the mating couplers.
You could simply use the kit that came with your compressor, buy no others, and be able to use your compressor and air tools, with a bit of difficulty, as you may not have enough connectors to go around.
Or, if a coupler / connector kit came with your compressor, ask the store clerk to identify their store brands that match those in the coupler/connector kit, and buy a number of couplers and lots of connectors of the same brand / configuration. If it were me getting my new compressor, I would pick up at least a dozen connectors and half-a dozen complementary couplers so that I had extras when I needed them.
And yes, I expect you will need them. We compressor users like our air tools and as mentioned, it is a whole lot faster to change tools when you have a connector already threaded into the air tool intact port.