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Summary of Contents for Elektrogas EVRM-NC
- Page 1 EVRM-NC EVRM-6NC Safety solenoid valves for gas Manual reset - Normally closed DN10 … DN200 elektrogas.com EE166 -0407...
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Page 2: Table Of Contents
Installation and servicing ………………………….. 10 Description The EVRM-NC /6NC type valve is a manual reset safety valve that is normally closed (open when energized). The closing function is electrically activated. This type of device, connected to one or more gas leakage detectors, safety thermostat or alarm signals for the presence of carbon monoxide, is suitable to perform locking operations on the gas line. -
Page 3: Functioning And Application
Functioning and application The EVRM-NC type valve is a manual reset safety valve that is normally closed. When not in working position the spring works on the shutter keeping the gas orifice closed. Simply by energizing the coil the valve does not open. It is necessary to manually move the reset rod located at the top of the coil. -
Page 4: Accessories And Optionals
ELEKTROGAS – MANUALE TECNICO Accessories and optionals A fine mesh filter is provided, to prevent dirty contamination of the seal seat. However, an external strainer must be installed upstream of the valve. Brass models are available without internal filter only. - Page 5 ELEKTROGAS – MANUALE TECNICO Fig.3 Tab. 2 Material and Power Flow factor Overall dimensions Peso connections consumption @230VAC [m³/h] [mm] [Kg] CuZn AlSi Rp 3/8 Rp 1/2 G 3/4 Rp 3/8 Rp 1/2 Rp 3/4 Rp 1 12,0 Rp 11/4...
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Page 6: Gas Flow Chart (Pressure Drop)
ELEKTROGAS – MANUALE TECNICO Gas flow chart (Pressure drop) dP [mmH O] 5000 3000 4000 5000 5000 4000 3000 2000 4000 3000 2000 3000 2000 1000 2000 1000 1000 1000 DN 200 DN 150 DN 125 DN 100 DN 80... - Page 7 ELEKTROGAS – MANUALE TECNICO When the flow read on the diagram is referred to operating pressure instead of standard conditions, the pressure drop ∆p read on the diagram must be multiplied for the factor: (1+ relative pressure in bar) Example: In the 2”...
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Page 8: Ordering Information
ELEKTROGAS – MANUALE TECNICO Ordering information Tab.4 Additional code for special voltages Designation (230V) 24 V 12 V Connections 110 VAC 600 mbar 6 bar EVRMNC0O EVRM6NC0O Rp 3/8 brass EVRMNC1O EVRM6NC1O Rp 1/2 brass EVRMNC2O EVRM6NC2O G 3/4 brass... -
Page 9: Standards And Approvals
ELEKTROGAS – MANUALE TECNICO Standards and approvals The valve design meets current European approval requirements regarding safety shut-off functions on gaseous fuels. These products conform with the Pressure Equipment Directive (97/23/EC) and the certification has been issued by the notified body: C.S.I. -
Page 10: Installation And Servicing
ELEKTROGAS – MANUALE TECNICO Installation and servicing To assure a proper and safe operation, as well as a long life of the valve, the installation procedure and a periodical servicing are very important topics and the following instructions should be always fulfilled. - Page 11 ELEKTROGAS – MANUALE TECNICO ELECTRICAL CONNECTION (IEC 730-1) Valve is provided with an ISO 4400 plug for the electrical connections. To connect the valve do the following: Using a screwdriver remove the plug from the coil. Unscrew the gland-nut (7) and remove the washer (6) and grommet (5).
- Page 12 ELEKTROGAS – MANUALE TECNICO EXTERNAL INSPECTION Turn off all power before servicing any part of the system. Check the conditions of the plug/box gasket. If gasket is deteriorated, replace it with a new one. Check the electrical connections are clean, dry and correctly tightened.
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