Furnace equipments products
Highly Reliable Reversal Valve
Glass Service produces a highly reliable reversal valve for end port glass furnaces.
The valve is made with a strong, steel support frame with a high thickness cast iron sliding gate.
The main features of the valves are:
- High resistance steel frame
- Special high resistance steel guide for the gate
- High thickness cast iron gate
- Vertical gate moved by double metal chain
- Gate movement driven by an electrical servomotor and a handwheel in case of emergency. The mechanical connection between the handwheel/motor is a pneumatic clutch. In addition, the system is equipped with a compressed air tank for emergency procedure in case of air supply failure
- 2 side gates, which independently, can block or allow the passage of combustion air or exhaust fumes
- Inspection doors for easy maintenance
- 4 high-temperature resistant position inductive switches, 2 for each stroke end
- 2 emergency electromechanical end of stroke micro-switches
- Chain mechanism protected by an easy to open, hinged cover
Reversal Valve
FUNCTIONALITY
With the gate open, exhaust fumes flow directly to the chimney. With the gate closed, combustion air, fed by the combustion fan, flows into the regenerator.
INSPECTION DOORS
The inspection door provides easy access to the tension regulation system connected with the gate. Usually, the regulation of this system is done during the commissioning, but in case further adjustments are needed, the operator can open the door and regulate the mechanism with ease.
COMPRESSED AIR TANK FOR EMERGENCY CLUTCH
In case the main compressor on-site fails, the Compressed Air Tank functions to provide the necessary amount of pressurized air to activate the clutch and allow for manual movement of the hand wheel. The system also includes a check valve, that prevents pressure drops in the tank once the main line cuts off the service.
DIMENSION AND MAIN FEATURES
Electrical motor: power 380 Vac, 3ph, power 1,5 Kw
Emergency compressed air supplied at a pressure of 4 bar: clean and dry
Maximum operating temperature: 600 °C
Reversal time: 12 sec for motor at 50Hz frequency
The valve will be supplied complete with a supporting structure for easy installation on the chimney.