Thermoplastic hoses are common in the industrial equipment, and they are widely used in medium-to-high pressure hydraulic applications (they resist pressure over 400 Bar). They are mainly used for handling compressed air, gases, oil, fuel, paint, chemicals, petroleum base hydraulic fluids, waste water, and etc. Due to their good chemical and corrosion resistance, under optimal storage conditions, they should have long service life without any need of repairs.
Structure of thermoplastic hoses
Thermoplastic hoses for high pressure have an extruded plastic core (internal layer) that is made of polyamide, polyester, or fluoropolymers. Their outer cover is made of oil and weather resistant materials, such as polyester, polyethylene, polyurethane, and PVC. The thermoplastic hose usually has one or two layers of reinforcements that are important for its high-pressure resistance. The reinforcement is coiled and can be steel, aramid or polyester.
Characteristics of thermoplastic hoses
- Resistance to weather conditions – thermoplastic hydraulic hoses can handle extreme temperatures, corrosion, ozone and UV rays.
- Light weight – thermoplastic hoses are up to 60% lighter than comparable rubber hoses. This also allows them to be produced in long continuous lengths as well as to be easily stored and mounted.
- Compact structure – thermoplastic hoses have smaller outer diameter in comparison with rubber hoses. That allows routing a single hose or multiple hoses individually through smaller and tighter places.
- Small bending radius – thermoplastic hoses can be made to extremely small inner diameters such as 2 mm. This is important in applications where only a small amount of fluid needs to be transferred. Likewise, the smaller bending radius makes installation of the hose easier as it allows routing without bending the hose in tighter places.
- Good resistance of the internal and external layer to hydraulic oil and wide range of chemicals.
- Thermoplastic hoses have very smooth internal layer surface that reduces the loss of flow rate.
- Thermoplastic hoses can be bonded – they can be bonded together into a double line and thus eliminating problems such as routing a single hose or multiple hoses through tight places or hoses rubbing against each other leading to abrasion damage. Another advantage of bonded thermoplastic hoses is reducing part counts in the system that leads to lower material cost, reduce installation time and lower the weight of the finished assembly. Bonded thermoplastic hoses are widely used in construction and agricultural industry, agricultural brake systems, forklifts, hydraulic cranes, aerial lift applications, etc.
VESTA-VI offers thermoplastic hoses available in stock – check our product range in category “Thermoplastic Hydraulic Hoses”.
VESTA-VI repairs and manufactures custom made thermoplastic hoses with fittings – for more information or advise visit us in our premises in Stara Zagora or Etropole or call/email us.