Related Manuals for Elektrogas VML2
Summary of Contents for Elektrogas VML2
- Page 1 Solenoid safety valves for Air and Gas Slow opening and fast closing type DN10 … DN80 www.elektrogas.com VML2 - VML4 Certified Quality System Printed in Italy - EE162/0704...
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Page 2: Technical Specifications
Slow safety solenoid valve Class A – Group 2 The VML type valve is a slow opening single-stage solenoid valve, normally closed. This type of device is suitable for air or gas blocking and releasing controls, required in gas power burners, atmospheric gas boilers, furnaces and others gas consuming appliances. -
Page 3: Operation
3- Operation The VML type valve is a safety shutting device using auxiliary power supply. When it is de-energized, the spring pushes on the seal disc, keeping the gas passage closed. Now, the inlet chamber is under the gas line pressure, and it forces on the disc too, improving the seal. - Page 4 360 mbar 200 mbar 200 mbar 130 mbar 200 mbar 130 mbar Rp 3/8 VML0 VML0B Rp 1/2 VML1 VML1B Rp 3/4 VML2 VML2B Rp 1 VML3 VML3B Rp 1¼ VML35 VML35B Rp 1½ DN 40 ( VML4 VML4B Rp 2...
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Page 5: Loss Of Pressure
8- Loss of pressure mmH O DN 80 DN 65 2" 1"½ 1"¼ 1" 3/4" 1/2" 3/8" mbar Formula of conversion from air to other gases Gas type Specific gravity (kg/m³) Natural Gas 0.80 1.25 Town Gas 0.57 1.48 Liquid Gas 2.08 0.77 1.25... -
Page 6: Valve Installation
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: Coil Replacement
11- Fast stroke adjustment (V start Fast flow section may be adjusted: Remove plastic cap. Using an hexagonal wrench, turn the outer screw clockwise to decrease or counter-clockwise to increase the initial fast stroke. When adjustment is completed, screw back the plastic cap. - Page 8 15- Maintenance To maintain a good performance of the system, almost once a year, an inspection of the valve is recommended. Brake External inspection Turn off all power before servicing any part of the system. O-ring Check the conditions of the terminal board gasket. If gasket is deteriorated, replace it with a new one.
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