Plaster hoses

How is a plaster hose constructed?

The plaster hose is constructed of three layers, which together create a durable final product. These include:

• inner layer (abrasion resistant), 
• reinforcement (provides the hose with the strength to withstand operating pressure), 
• outer layer (resistant to abrasion, environmental conditions, and ozone).

As for the manufacturing material, plaster hoses are usually made from a blend of SBR rubber and NR rubber. In some cases, you'll also find polyvinyl chloride (PVC) hoses that are lined with abrasion-resistant polyurethane (PU).

Since plaster and other mortars are classified as abrasive media, they generate electrostatic charges during transport. Therefore, the material of plaster hoses is also anti-static.

On the other hand, the reinforcement of the hose itself usually takes the form of a braid or textile cord.

What to pay attention to when choosing a hose for a plastering unit?

When you are choosing a hose for a plastering unit, be guided by several important parameters. These are:

• Working pressure — for most plaster hoses it is 40 bar, but it is still worth checking; 
• Permissible temperature range — too high or low temperatures can adversely affect the properties of the hose material; 
• Abrasion resistance — indicates the resistance to friction of the medium against the inner walls of the hose, in this case, the lower the score, the better; 
• Nominal inner diameter — determines the width of the hose, and matches it to the unit/plant; 
• Section length — hoses are usually available in reels of dozens to more than 100 meters but can be cut to fit your needs.

Take into account the above points, and you will surely choose a product that exactly meets your needs.

What are the characteristics of plaster hoses?

Plaster hoses are characterized by several important attributes that make them suitable for working in harsh conditions on construction sites, etc. We look at these characteristics below.

Mechanical strength

Plaster hoses are dragged on the ground and floor, trampled, and also work in an environment where something can easily fall on them and cause damage to the hose wall.

Therefore, the basic property of this type of hose is solid construction and durable material. It endures many difficulties, such as impacts, friction, changing weather conditions, and ozone.

As a result, even in such harsh conditions as a construction site, the working hose for a plastering unit is distinguished by its long life and resistance to damage.

Abrasion resistance

Another important issue is insensitivity to the medium with which the hose works. In the case of plaster, gypsum, or cement mortar, you are dealing with solid particles that rub against the inner wall of the hose during transport.

That's why it's so important that the interior of the hose is also resistant to abrasion. For this reason, its inner wall is specially adapted for the transfer of solid or semi-liquid substances with solid particles.

The material responsible for this is, in this case, either an SBR/NR rubber compound or a polyurethane coating.

Plastering couplings

You'll buy many plastering hoses with factory-installed mortar couplings, which means they're good to go right away. In most cases, these will be CAMLOCK couplings or GEKA couplings, but sometimes there are others.

These types of couplings can withstand pressures of up to 50 bar (sometimes more) and are great for use where plaster, gypsum, or cement mortar transport is required.

Couplings are mounted on the plaster hose in two ways. The first is through clamping sleeves. The second way is based on special clamps/clamping bands. Both methods guarantee the high strength of the installation.