Solenoid valves are PED certified (CE 0497) and designed to be installed on the gas supply line and connected to a gas detection system. They shut off the gas flow when a sensor or control device in the monitored area detects a hazard.
All solenoid valves feature manual reset in accordance with Italian standard CEI UNI EN 50 194 for gas detection systems.
To prevent unwanted closure caused by brief mains power interruptions, the normally closed (N.C.) 230 V AC manual reset solenoid valves are equipped with a power supply system that tolerates interruptions of less than 30 ms.
The normally closed (N.C.) valve is continuously powered while open. It closes only when power is interrupted, either by a command from the connected detector or by a mains power failure.
The N.C. valve therefore provides a higher level of safety than normally open valves, as it also performs its safety function during a power failure (positive safety principle).
These solenoid valves are referred to as manual reset valves because human intervention is required to return them to their initial position after activation. They are manufactured to European standards and are PED certified (CE 0496 and CE 0497).
Their simple and reliable operating principles provide high functional reliability. The bodies are made of aluminium.
The solenoid valve is generally positioned after a filter, outside the monitored area, and upstream of the pressure regulation devices.
Valves up to DN100 must be installed with the raised arrow on the body pointing towards the consumer or appliance.
Reset is performed by pulling the piston upwards along its axis using the handle initially screwed vertically onto the shaft.
Unscrew the handle, screw it back on horizontally, and pull upwards to reset the valve. After resetting, remember to screw the handle back into its vertical position.
