The system is composed of:

• Support frame on wheels
• Discharging adaptor
• ATEX certified black silicone compensator,
• Inflatable Seal
• Ultra-flexible wave compensator
• Load cell
• HMI panel

The use of this system is very simple and efficient as once the working cycle of the dryer is finished the operator places the system below the discharge outlet of the drier and through the adapter connects the system to the machine, at this point the system is ready to be used.
The operator places the drum with the bag on the scale and by means of the manual control valve deflates the ring and without the aid of any tool wraps the bag around the discharging pipe. Once the bag is in place he manually inflates the ring again by means of the control valve blocking the bag to the pipe, thus starting the product filling and dosing.
The start of the dosing cycle is activated by the HMI (touch screen) control panel that makes the operator interface to the system quick and easy. The pre-set program in the PLC allows the system to be used in two modes: automatic and manual.
The automatic mode allows the operator to perform the working cycle of the system automatically allowing the system to display the settings of the machine and the status of the cycle. The manual mode, protected by a password, allows the operator to perform all the system operations manually, verifying and improving the dosing parameters, and performing the calibration of the load cells.
The valve used to perform the dosing is the CO.RA. Double Valve, a valve that allows a very high dosing accuracy - upto ± 10gr of 25 Kg of the packaged product. The dosing with this type of valve takes place in two distinct stages: the first is the bulk dosing, using the butterfly which allows the discharge of 90% of the pre-set weight on the operator’s panel, while the remaining 10% is discharged by the alternating movement of the rotor until the final weight is reached within the set tolerance.
Once the weight is reached the system automatically stops the working cycle. When the discharge is finished the operator releases the bag and proceeds with the next cycle.
In order to make the cleaning operations simple and fast, the system was designed and built to be  disassembled using the connecting MF flanges with clamp connection, while the valve is complete with an AQR system that allows the disassembly of the actuator from the valve so that they can be placed in dedicated spaces.
The working environment in which the system is installed is Atex Zone 22 (dust) and all the material used for the construction of the system complies with the directive.
Usually in the rooms that use this system the floors are slanted to allow the flow of washing water. To prevent misalignment of the dosing system and the machine to discharge, resulting in loss of product, CO.RA. has inserted a compensator which, thanks to its flexibility, allows for a continuous connection.
Focusing on its strengths, with the Inflatable Seal Filling, Dosing and Weighing System, CO.RA.
 has converted the concept of optimization and time and cost recovery into practice through the development of innovative solutions and the detailed customized design.

The terminal is provided with a back lit, high contrast liquid crystal digital display of weight and analog weight range with application icon signaling activities and communication interfaces for DCS Profibus type, Ethernet and RS232 connections. "Said terminal" can be connected to a multi-strip printer or label printer and a version for hazardous enviroments – zone 1/21 (ATEX 94/09/CE) is also available. The maximum dosing accuracy achievable is +/- 50 gr.

The DOUBLE VALVE®, is designed to satisfy control, dosing, regulation and mixing requirements during the filling process of products. It is a dosing valve, completely made of stainless steel AISI 316L, with a silicone gasket that complies with FDA 177.2600 norms and composed of a butterfly with a central rotor. The valve is driven by double acting pneumatic actuators, 90° for the butterfly and 180° for the rotor. The actuators are driven by a control panel interfaced with the weighing system.

A Double Valve is installed on the outlet of the machine to be discharged and it is fixed in place by clamps which simplifies the assembly and/or disassembly. The operating cycle of the system is divided into two distinct phases: heavy dosing and trickle dosing. During the first phase the butterfly opens to allow the quick discharge of 95% of the product to be dosed until the heavy weight limit is reached. During the second phase the butterfly closes and the rotor (in the centre of the butterfly) begins to trickle feed until the total weight of the product is reached.
Thanks to the acquired ergonomic knowledge CO.RA has ensured maximum protection of health and prevention of accidents of the operator during the work cycle.
The finish is satin, stainless steel for parts not in contact with the product and polished for those in contact. Upon request depending on the area where the system is installed it can be supplied completely polished.

The operating cycle of the system is divided into two distinct phases: heavy dosing and trickle dosing. During the first phase the butterfly opens to allow the quick discharge of 95% of the product to be dosed until the heavy weight limit is reached. During the second phase the butterfly closes and the rotor (in the center of the butterfly) begins to trickle feed until the total weight of the product is reached.

An empty container is placed on the base of the scale, the liner is pulled until it touches the bottom of the container and the end is closed by means of a clip in order to form the “bag bottom”. At this point it is necessary to push the start button on the dosing terminal, and once the product has been discharged, a clip is placed to close the bag and another clip 10 cm above that one in order to create the necessary space to cut the bag. Finally, it is necessary to remove the container from the base and repeat the cycle described above.