OMT Group’s range of heat exchangers consists of: air-oil heat exchangers; and water-oil heat exchangers (shell and tube).
The air-oil heat exchangers have been designed to be used on the return line of the hydraulic systems.
The special structure of the cooler element in aluminium alloy increases the conductivity quality, and the brase welding process of the conduits allows a high thermic exchange and a good resistance to pressure, obtained by using qualified materials.
The water-oil heat exchangers SA series “shell and tube” are manufactured based on the most advanced technologies in order to make them very reliable even in hard working conditions. The tube bundle is made of a very high number of thin tubes to optimize the thermal yield until 75kW within a compact layout; the water circuit is inspectable and designed to get the maximum water saving.
OMT Group is able to design and manufacture combined exchangers according to customer needs.
AIR-OIL HEAT EXCHANGERS
AIR-OIL HEAT EXCHANGERS- Direct current motor air-oil heat exchangers, used for the cooling of earth-moving, road, agricultural and railway machinery, for construction: truck mixers, drilling rigs, mobile cranes, truck cranes.
- Alternating current motor air-oil heat exchangers, increasingly used instead of water-oil exchangers, for obvious ecological reasons and lower working costs, for cooling the same machines and systems.
- The air-oil heat exchangers with fan driven by a hydraulic motor, also used in the mobile machinery market.
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In this way our technical team will be able to identify the correct sizing of the air-oil heat exchanger suited to your needs.
WATER-OIL HEAT EXCHANGERS
WATER-OIL HEAT EXCHANGERSThe water-oil heat exchangers SA series “shell and tube” are manufactured based on the most advanced technologies in order to make them very reliable even in hard working conditions. They are suitable for cooling hydraulic systems, injection presses for plastic and rubber, machine tools, speed reducers
Integrated Thermostatic and By-pass Valves
Our wide experience and the continuous technological research allow us offering tailored solutions and a up to date range of products.
Integrated Thermostatic and By-pass Valves
EXTERNAL BY-PASS valve helps draining pressure peaks generated by sudden increase of oil viscosity and/or flow rate.
THERMOSTATIC VALVE ensures a fast oil temperature warming up in particular harsh climate, with very cold oils.
OMT Group provides the possibility to integrate by-pass and, if required, the thermostatic valve in one compact and economic solution.
During the start-up process, cold oil goes around the heat exchanger by-passing the core and preventing it from any possible damage.
As the oil reaches 40°C temperature, thermostatic valve begins to close proportionally until it reaches its complete shutdown at 55°C, avoiding thermal shocks.
In the event that, due to sudden flow increases or physical decreases of the sections of the pipes, pressure overtakes the preset value of the by-pass valve, thermostatic valve opens protecting the core.
BY-PASS VALVE eliminates the pressure drops problem when the oil viscosity is higher and ensures better temperature control, making the cooler more performing.
PRODUCTION
PRODUCTIONOMT Group heat exchangers are entirely designed and produced in the Calvenzano (BG) complex.
The design is managed by a team of technicians who have the most modern and qualified 3D design and drawing technologies at their disposal.
The production process involves the manufacture from the aluminum radiant mass on site, with a high vacuum brazing furnace; producing and assembling the radiant masses directly determines a great flexibility and elasticity for the constructive characteristics and guarantees response times that would not be possible otherwise.
The heat exchangers range is divided into two major categories:
– Air-oil exchangers, standard and combined type
– Shell and tube heat exchangers.
