478
DIAPHRAGM SAFETY RELIEF VALVE, F/F THREADS, FOR SOLAR HEATING SYSTEMS
PRESENTATION OF PRODUCT
Art.478 - Diaphragm safety relief valve - f/f threads - for solar heating systems
It provides automatic temperature and pressure relief protection for hot water and storage tank.
It is equipped with a manually operating lever.
The valve lever must be manually operated at least one a year to insure that water-ways are clear.
Body in nickel-plated brass
Maximum working pressure: 10bar
Available setting: 6 bar
82mm extension thermostat
Minimum and maximum working temperature: -20°C, 160°C
Opening overpressure: 20%
Closing differential: 20%
Threads: ISO228 (equivalent to DIN EN ISO 228 and BS EN ISO 228)
Available size: 1/2"x3/4".
