Elektrogas EVRM-6NA Manual Download Page 6 | Manualshive

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ELEKTROGAS – TECHNICAL MANUAL

6-12

AIR

GAS

V

k

V

⋅

=

Gas flow chart

(Pressure drop)

Fig. 4

Formula of conversion
from air to other gases

Tab. 3

15°C, 1013 mbar, dry

Gas type

Specific gravity

ρ

[Kg/m³]

GAS

.

k

ρ

25

1

=

Air

1,25

1,00

Natural gas

0,80

1,25

Town gas

0,57

1,48

LPG

2,08

0,77

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Summary of Contents for EVRM-6NA

Page 1: ...elektrogas com EVRM NA EVRM 6NA Safety solenoid valves for gas Manual reset Normally open DN10 DN200 EE167 0510...

Page 2: ...ed in the 1 2 and 3 families EN 437 Two range of operating pressure low pressure 0 600 mbar and medium pressure 0 6 bar The valves are normally not powered allowing a remarkable energy saving An incor...

Page 3: ...f the presence of gas the valve remains under power and does not allow reset When the causes for locking have been eliminated valve must be opened manually Fig 1 The 6NA versions are provided with a d...

Page 4: ...th Ex proof marking for use in Zone 2 according to 94 9 EC Directive ATEX Technical specifications Tab 1 Connections Gas threaded ISO 7 1 from Rp3 8 to Rp2 Flanged PN16 ISO 7005 from DN40 to DN200 Vol...

Page 5: ...6 9 5 85 96 138 165 0 8 Rp 1 16 12 0 85 96 138 165 0 8 Rp 11 4 16 20 0 120 153 170 203 1 6 Rp 11 2 16 26 0 120 153 170 203 1 6 Rp 2 16 40 0 106 156 175 213 1 9 DN 40 1 16 26 0 150 193 170 245 110 4x18...

Page 6: ...AIR GAS V k V Gas flow chart Pressure drop Fig 4 Formula of conversion from air to other gases Tab 3 15 C 1013 mbar dry Gas type Specific gravity Kg m GAS k 25 1 Air 1 25 1 00 Natural gas 0 80 1 25 T...

Page 7: ...ce with the characteristic Kvs value which is shown in table 2 The selection of the valve requires the calculation of the Kv under the operating conditions Considering only subcritical pressure drops...

Page 8: ...6F DN 50 1 B C GW H HW 110 VAC 24 VDC 12 VDC EVRMNA7 EVRM6NA7 DN 65 EVRMNA8 EVRM6NA8 DN 80 EVRMNA9 EVRM6NA9 DN 100 EVRMNA93 EVRM6NA93 DN 125 EVRMNA95 EVRM6NA95 DN 150 EVRMNA98 DN 200 B _ G H _ 1 Optio...

Page 9: ...EC and the certification has been issued by the notified body C S I Spa Viale Lombardia 20 I 20021 Bollate MI The following standards technical specifications have been fulfilled Electromagnetic Compa...

Page 10: ...move the end caps and make sure no foreign body is entered into the valve during handling THREADED MODELS Put sealing agent onto the pipe thread Avoid excessive quantities which could enter in the val...

Page 11: ...cording to printed designation Pull back the cable and insert the terminal block into the housing Screw back the gland nut make sure that the grommet is locked on the cable Insert the screw and gasket...

Page 12: ...ing If necessary replace them Remove the spring and blow it with compressed air Check the spring is corrosion free Clean the disc assembly with a clean cloth and compressed air Grease the rod O ring C...

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