Safety solenoid valves for gas with manual reset, normally closed
Once opened, the valve can maintain this position until electric current circulates on the coil. In absence of electric current, the valve closes rapidly and remains shut upon return of the same. Once the causes for the lock have been eliminated, an opening must be worked manually as described above.
This type of device, connected with one or more pressure switches is suitable for locking operations upon gas, air, or electric current failure, and is qualified for continuous service (permanently live).
Function And Application
The EVRM-NC type is a manual reset safety valve that normally closed. When not in the working position the spring works on the shutter keeping the gas orifice closed. Simply by energizing the coil the valve does not open. It’s necessary to manually move the reset rod located at the top of the coil.
Once opened, the valve can maintain this position until electric current circulates on the coil. In absence of electric current, the valve closes rapidly and remains shut upon return of the same. Once the causes for the lock have been eliminated, valve must be opened manually as described above.
|Connections||Internal threaded ISO 7-1 from Rp3/8 to Rp2½|
|ANSI-ASME B1.20 from 3/8”NPT to 2”½NPT|
|Flanged ISO 7005 PN16 from DN40 to DN300|
|ANSI-ASA-ASME B16.5 class 150 from 2” to 10”|
|Voltage ratings||230 VAC 50/60 Hz|
|120 VAC 50/60 Hz|
|110 VAC 50/60 Hz|
|Voltage tolerance||-15% to +10%|
|Temperature||-15°C to +60°C (+5°F to +140°F)|
|Max. operating pressure||600 mbar (9 psig)|
|6 bar (90 psig)|
|Body test pressure||1 bar (15 psig)|
|9 bar * (130 psig)|
|Closing time||< 1 second|
|Gas strainer||600 µm (0.02 in), metal mesh (except 6 bar models)|
|Enclosure||IP65 models with ISO plug DN10… DN 80 (NEMA 4)|
|IP54 models with terminal box DN100 … DN 300 (NEMA 3)|
|(IP65 optional with cable NEMA 4)|
|Cable gland||M20 models with terminal box DN100…DN300|
|PG 9 models with ISO Plug DN10…DN80|
|Wires cross-section||2,5 mm2 max. (AWG 12) for terminal board|
|1,5 mm2 max. (AWG 14) for ISO plug|
|Electrical safety||Class I (EN 60335-1)|
|Coil winding insulation||Class H (200°C, 392°F)|
|Coil thermal resistance||Class F (155°C, 311°F)|