Electrically Heated Hoses are used in the transfer, loading and unloading of substances that require the temperature of the medium to remain constant at a specified value irrespective of variations in ambient temperature which allows proper flow. Our hoses are designed and manufactured to optimize heat uniformity and control characteristics using an integrated temperature sensor and evenly distributed resistive heating element. Years of engineering experience ensure the hose will maintain the medium being transferred at an even, pre-set temperature, avoiding hot spots or changes in viscosity, eliminating condensation, degradation and crystallization.
Heated hoses are used in bonding technology, filling and dosing systems, medical technology, chemical, pharmaceutical and food industry, extruder applications, and research & development. They are used for transfer of mediums such as wax, hot melt, grease, paints, adhesives, granules, food products, solvents, etc.
Construction
- Inner hose : Is in direct contact with the heated liquid media. Standard hoses are high-quality heavy wall Polytetrafluoroethylene (PTFE) having a very low coefficient of friction to a high chemical resistance and a temperature range of -70°C to 250°C.
- Stainless steel braiding : Is required for high pressure use. Up to 3 layers of braiding can be applied to increase the operational pressure.
- Heating element : Is precisely wound around the hose at a constant predetermined pitch to ensure accurate and uniform heat density. Temperature sensor ensures accurate system control. Supply voltage is usually 230 V(optionally 12 ÷ 500 V). As a standard temperature sensors of PT100 type are used, type J and K thermocouples, though other sensors are also available, e.g. NI120, NTC.
- Outer braiding cover & silicone hose end caps : Outer protective braided / Hose type cover & high temperature silicone rubber heavy duty end caps for long & satisfactory life at high temperatures.
- Filling : The hose fittings (threaded type, flange type, Tri-clover clamp, etc.) at both hose ends are selected according to customer’s specification. We at Flexibles supply the electrically heated hoses with virtually all types of fittings available in the market.
Application
The electrically heated hoses are used in every industrial field, from alimentary to chemical, from automotive to pharmaceutical, in general wherever it is necessary to have high quality and high resistance hoses and a precise temperature control. Some applications are:
- Labelling or sealing machines, for melting adhesive
- Foaming of dual-compound machines with independent heating
- Machines for gas analysis in steel foundries, tests in automotive industry
- Heating systems, to lubricate dense diesel oil for feeding the boiler
- Co2 fillers, to avoid cooling by expansion
- Machines for food processing industry, e.g. Icing cakes or coating with chocolate
- Sound-proofing foam spraying, e.g. Seat covers or glasses
- Road work machines, for asphalting
- Toxicity or anti-pollution control systems, paint spraying cabins
- Survey and analysis of gas
- Pharmaceutical jellies
- Water & waste disposal
- Waxes – candle making
