VML
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VML VML 6 bar Safety solenoid valves for gas Slow opening and fast closing type DN10 … DN80

ELEKTROGAS – Technical Sheet EE162 - 1020 The VML type valve is a slow opening single-stage solenoid valve, normally closed (open when energized). This type of device is suitable for air or gas blocking and releasing controls, required in gas power burners, atmospheric gas boilers, industrial kilns and others gas consuming appliances. The valves are made of aluminum alloy die-cast, with a wide range for inlet/outlet connections from DN10 (3/8”) up to DN80 (3”). Sealings are made of NBR-based rubber certified for use with gas (EN 549). Suitable for use with air and non-aggressive gases...

ELEKTROGAS – Technical Sheet EE162 - 1020 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. When the coil is powered the valve opens slowly because of the hydraulic brake, against the strength of the spring and gas pressure. The rapid stroke may be adjusted using the regulating screw on the top (see the installation and service instructions), to adjust the initial gas...

ELEKTROGAS - Technical Sheet EE162 - 1020 Voltage ratings Voltage tolerance Ambient temperature Media temperature Max. operating pressure Tab. 1 Internal threaded ISO 7-1 from Rp3/8 to Rp2^ or ANSI-ASME B1.20 from 3/8”NPT to 2”^NPT Flanged ISO 7005 PN16 from DN40 to DN80 or ANSI- ASA- ASME B16.5 class 150 from 2” to 3” 230 VAC 50/60 Hz 120 VAC 50/60 Hz 110 VAC 50/60 Hz 24 VAC/DC -15% to +10% -15°C to +60°C (+5°F to +140°F) Body test pressure Closing time Opening time Gas strainer Enclosure Cable gland Wires cross-section Electrical safety Coil winding insulation Coil thermal resistance...

ELEKTROGAS - Technical Sheet EE162 - 1020 Material and Overall dimensions Weight 3"ANSI 7,8712,013,2316,736,004x/32,0 (1) Flanged connection with optional kit

ELEKTROGAS - Technical Sheet EE162 - 1020 (Pressure drop) dP [mbar] Formula of conversion from air to other gases GAS AIR 700 600 500 400 Tab. 4 Gas type Specific gravity

ELEKTROGAS - Technical Sheet EE162 - 1020 When the flow read on the diagram is referred to operating pressure instead of standard conditions, the pressure drop Ap read on the diagram must be multiplied for the factor: (1+ relative pressure in bar) Example: In the 2” solenoid valve with an air flow of 80 Nm3/h there is a pressure drop Ap = 5 mbar. If we consider that 80 m3/h is the flow at 200 mbar of inlet pressure, then the pressure drop to be consider is: Ap = 5x(1+0,2) = 6 mbar Normally, pressure drop and flow rate for the valves are read from the gas flow diagram. However, the valves...

ELEKTROGAS - Technical Sheet EE162 - 1020 N .B none Rp internal thread / ISO flange F Flanged connection (only for 1 ”%-2”) N US market version (FM approved - NpT thread / ANSI flange) T Threaded (Rp2"”A only) Supply voltage none 230V 50/60Hz (120V 50/60Hz with “N" variant) B 110V 50/60Hz (120V AC on request) C 24V AC/DC Special versions (some may be present concurrently) L Low power (when not standard) P Proof of closure (POC) for US market only Y NPT thread / ANSI flange (1) Flanged connections whit optional kit

ELEKTROGAS - Technical Sheet EE162 - 1020 ■ All the valves can be supplied in special versions for aggressive gases such as biogas (version J) and cOg (version K). They are free of brass and NBR. In this case customer shall check compatibility between valve materials and gas contents. ■ The valves are available with a proof-of-closure switch (POC), comply with NFPA 86 requirements (version P from 3/4” to 3”). A factory adjusted SPDT switch inside an enclosure mounted on the bottom of the valve, provides an electrical signal indicating the valve position. A two-colored led gives also a...

ELEKTROGAS – Technical Sheet EE162 - 1020 Design, installation and servicing To assure a proper and safe operation, as well as a long service life of the valve, consider the following recommendations during the design of the system where the valve will be installed: Ensure that all the features of your system comply with the specifications of the valve (gas type, operating pressure, flow rate, ambient temperature, electrical voltage, etc.). Valve may be mounted with coil in horizontal or vertical position, not upside down. Coil may be oriented 360 degrees in any direction. In the event of...

ELEKTROGAS – Technical Sheet EE162 - 1020 The product complies with the essential requirements of the following European Directives and their amendments: 2016/426/EU (Gas Appliances Regulation) 2014/68/EU (Pressure Equipment Directive) 2014/34/EU (ATEX) when shown upon the product 2014/30/EU (Electromagnetic Compatibility) 2014/35/EU (Low Voltage Directive) 2011/65/EU (RoHS II) The product complies with the Technical Regulations TP TC 004/2011-016/2011-020/2011032/2013 of Russia, Belarus and Kazakhstan. Declaration of Conformity: № RU Д-IT.PA01.B.08271/18 The product is approved for...