Hosetails

How is a hosetail constructed?

A hosetail is usually a one-piece product, but its construction is divided into two distinct segments. These include:

• hose connector (corrugated or plain), 
• thread (comes in several different types).

In addition, there are two types of spigots in terms of shape: straight and angled. The first (as you may have guessed) connects the hose to the installation in a straight line. The second, on the other hand, is bent, i.e. it forms an angle (usually 90 degrees).

What materials are used for building hosetails?

Hosetails are available in several material versions:

• galvanised steel, 
• stainless steel, 
• brass, 
• copper, 
•  plastic.

Depending on the material chosen, the various hosetails will differ in their properties.

In addition, hose ends for pressure hoses can feature several different thread variations. You will read about them below.

What threads do hosetails have?

Hosetails have several different types of threads. Most popular of these are:

• Metric threads (DIN) — These are the types of connection that predominate in Europe. They take their name from Germany (DIN, or German Institute for Standardisation) and have a taper of 24 degrees. They come in a light version and a heavy version, which is used for higher working pressures. 
• BSP threads — These have a British origin, but are very popular throughout Europe and the world. They usually come in a tapered version, but there are also British straight threads. 
• SAE/JIC threads — They originated in North America and take their name from the Joint Industrial Council (JIC). They are characterised by taper with an angle of 37 degrees and are often referred to as a cup because of their distinctive appearance. 
• NPT/NPTF threads — Another American thread, but this time in a tapered tubular version. They are very robust, so they are used wherever very high working pressures are involved.

Of course, these are not all the hose connections you will find on the market.  You can also choose from hosetails for fire hose, mining, washing equipment, welding, etc.

How to choose the right hosetails?

When you are choosing hosetails, pay attention to a number of key issues. These include:

• maximum working pressure (influenced by both the production material and the thread type); 
• permissible temperature range (directly influenced by the manufacturing material); 
• diameter and type of thread (choose so that it fits the installation); 
• diameter of the plug (must correspond to the size of the hose); 
• length of the plug (depends on the type of hose and assembly method); 
• manufacturing material (should correspond to the type of medium to be transported).

Take the above points into account, and you will certainly select the right threaded spigot.

How to mount a hosetail ?

How to mount a hosetail largely depends on the type of hose. However, in most cases, it comes down to three methods of proceeding.

The first concerns hosetails with a special safety ring. In this case, all you have to do is insert the evenly cut hose into the ring — and that's it. Under pressure, the hose will automatically become airtight.

Another way is to crimp the hose with a collet. In this case, the hosetail secured by a crimped metal jacket, which guarantees tightness and safety during operation.

The third and final installation method is clamps and clamping rings. You slide them onto the hoses and clamp them using a suitable mechanism (usually a screw lock). This holds the hose end firmly in place. An additional advantage of this method is that most clamping devices do not require the use of sophisticated assembly tools.