Manual Reset Safety Valves EVRMNA EVRM6NA
Safety solenoid valves for gas with manual reset, normally open The EVRM-NA type valve is a manual reset safety valve that is normally open. A manual operation is therefore necessary to open the valve and set the mechanism consenting to maintain this state. The powering by means of line current and/or condenser discharge, induced by the leakage detector, causes tripping of the mechanism and consequent closing of the gas passage. If energizing of the sensor persists due to the presence of gas, the valve remains under power and does not allow reset. When the causes for locking have been eliminated, the valve may be reopened by working it manually.
This type of device, connected with one or more leakage detectors or alarm signals for the presence of carbon monoxide, is suitable for performing locking operations on the gas line.
1.Material/connection
•CuZn : Rp3/8 … G1
•AlSi : Rp3/8 … Rp2½
•AlSi : DN40 … DN300
2.Operating Pressure
•0 … 600 mbar
•0 … 6 bar
3.Gas type : Air and non-aggressive gases (Family 1-2-3, EN 437)
4.Approvals : EC-type tested and certified according to 97/23/EC
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