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Summary of Contents for Elektrogas EVRM-NA Series
- Page 1 EVRM-NA Safety solenoid valves for gas Manual reset - Normally open DN10 … DN200 www.elektrogas.com EVRM-NA6 / EVRM-NA9 Certified Quality System Printed in Italy - EE167/0105...
- Page 2 EVRM-NA Safety solenoid valves for gas Manual reset - Normally open The EVRM-NA type valve is a manual reset safety valve that is normally open. This type of device, connected with one or more gas leakage detectors or alarm signals for the presence of carbon monoxide, is suitable for performing locking operations on the gas line.
- Page 3 3- Operation 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.
- Page 4 7- Valve identification Connections type 230 VAC 110 VAC 24 V AC/DC ( 24 VDC-22W 12 VDC 12 VDC-22W Threaded Flanged Rp 3/8 brass EVRMNA0AO EVRMNA0BO EVRMNA0CO EVRMNA0COW EVRMNA0DO EVRMNA0DOW Rp 1/2 brass EVRMNA1AO EVRMNA1BO EVRMNA1CO EVRMNA1COW EVRMNA1DO EVRMNA1DOW Rp 3/4 brass EVRMNA2AO EVRMNA2BO EVRMNA2CO...
- Page 5 8- Loss of pressure dP [mmH O] DN 200 DN 150 DN 125 DN 100 DN 80 DN 65 2" 1"½ 1"¼ 1" 3/4" 1"-OT 1/2" 3/8" 3/4"-OT 1/2"-OT 3/8"-OT dP [mbar] Formula of conversion from air to other gases Gas type Specific gravity (Kg/m³)
- Page 6 9- Valve installation 10- Electrical connections (IEC 730-1) Verify the line pressure is lower of the maximum working Check correspondence between valve voltage rating and pressure admitted to the valve. line power supply, before making any electrical Check correspondence of flow direction with arrow connections.
- Page 7 11- Maintenance Flanged models: To maintain a good performance of the system, almost Close ball valve upstream the system. once a year, an inspection of the valve is recommended. Unscrew the knob. Using an Allen key, remove the screws on the upper External inspection flange, in cross way.
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