Hose couplings are an essential part of a fluid power system. They are used in a wide range of industrial applications, including agriculture, construction, fire protection, and chemical and food & beverage processing.

When selecting hose couplings, it's important to know what type is right for your application. Choosing the wrong type of hose coupling can lead to failures, property damage, or even employee injury.
Regardless of the type, all hose couplings and coupling-hose combinations must pass performance tests before being installed on a hose and put to work. These include proof testing (using a hydrostatic pressure of twice the working pressure), burst testing, and leakage testing.

Crimps and Tolerances
The crimp of the male-to-female ends of a hose-coupling assembly are critical to its ability to hold and maintain the fluid power pressure it was designed to carry. The crimp tolerance of the ferrule and hose end must be precise.
Selecting the correct hose size and sizing is another factor that must be addressed when choosing a coupling. Different hose sizes require different fittings.

Coupling-hose combinations must also be compatible with each other and with the media they'll transport. If the hose and coupling parts aren't matched correctly, the entire hose-coupling system will fail.
The storz-type hose coupler is an excellent choice for most hoses and is easily aligned by matching two halves together and then turning them clockwise one quarter of a turn. This simple process prevents snagging, and it makes it possible to connect one hose to another with minimal effort.