Brass Pre-set - Article 1400
SAFETY VALVE WITH DIAPHRAGM FIXED SETTING AND HAND WHEEL
The safety valve is used to discharge the pressure when a fixed Value is over passed (fixed by the setting of the same valve).
Preset pressure : 1.5/2/3/4/5/6 bar
Setting tolerance : ± 0, 1 bar
Max temperature (water) : 140° C
Threading for :
Waterworks : UNI ISO 228/1
Body in brass UNI EN 12165:98
Diaphragm in NBR
Spring in carbon steel C72
The dimension of the objects in the sketch might not be proportionate among them.
While installing a safety valve to protect a boiler, we suggest installing at the inlet of same, after the check valve and without ball valve or similar. In this case the seat of the safety valve is more protected because it is not in contact with the hot water and there are few possibilities of calcareous deposits.