VMR safety solenoid valves for gas - fast opening and closing
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VMR VMR-OTN Safety solenoid valves for gas Fast opening and fast closing type DN8 … DN150

ELEKTROGAS – Technical Sheet EE161 - 05/12 The VMR type valve is a fast 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 (or hot-pressed brass for OTN versions), with a wide range for inlet/outlet connections from DN 8 up to DN 150. Pipe connections meet group 2 and backpressure sealing is compliant with class A, according to EN161...

ELEKTROGAS – Technical Sheet EE161 - 05/12 The VMR 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 which forces on the disc, increasing the closing function and improving the seal. When the coil is powered the valve opens rapidly, against the strength of the spring and gas pressure. The flow may be adjusted using the regulating screw on the top (see the installation and service instructions). If the power supply is shut off,...

ELEKTROGAS – Technical Sheet EE161 - 05/12 Technical specifications Gas threaded f/f ISO 7-1 from Rp1/4 to Rp2½ Flanged PN16 – ISO 7005 from DN40 to DN150 Voltage rating Voltage tolerance Power consumption Ambient temperature 200 mbar (20 kPa) 360 mbar (36 kPa) 500 mbar (50 kPa) Flow capacity Closing time Opening time Filter (except brass models) Protection class IP54 (EN 60529) (optional IP65 with cable) Cable gland M20x1,5 (EN 50262) for terminal box PG 9 for standard plug Wires cross-section Electrical safety Coil winding insulation Coil thermal resistance Materials in contact with gas...

ELEKTROGAS – Technical Sheet EE161 - 05/12 Tab. 2 Material and connections CuZn Rp 1/4 Rp 3/8 Rp 1/2 (1) Flanged connection optional Kit Overall dimensions

ELEKTROGAS – Technical Sheet EE161 - 05/12 Gas flow chart (Pressure drop) Formula of conversion from air to other gases Specific gravity

ELEKTROGAS – Technical Sheet EE161 - 05/12 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: 3 In the 2” solenoid valve with an air flow of 80 Nm /h there is a pressure drop ∆p = 5 mbar. 3 If we consider that 80 m /h is the flow at 200 mbar of inlet pressure, then the pressure drop to be consider is: ∆p = 5x(1+0,2) = 6 mbar Normally, pressure drop and flow rate for the valves are read from the gas flow diagram. However, the...

ELEKTROGAS – Technical Sheet EE161 - 05/12 Ordering information Available Tab.4 Material and connections CuZn (1) Provided with encapsulated coil and ISO 4400 plug (2) Without flow adjustment (3) Flanged connections optional kit (4) Class B Special versions and optionals Additional G1/4 gauges in the outlet chamber: on request for the sizes 1”¼, 1”½ and 2” (standard from DN65 to DN150). G1/8 connection on the bottom to fit a closed position indicator micro-switch (PCS type): on request from 3/4" to 2" (standard from DN65 to DN150). To install the micro-switch the adapting kit must be...

ELEKTROGAS – Technical Sheet EE161 - 05/12 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 EE161 - 05/12 The valves are designed and manufactured according to European Directive on the gas appliances 2009/142/EC and the certification has been issued by the notified Body GASTEC CERTIFICATION B.V. Wilmersdorf, 50 NL-7323 AC Apeldoorn CE Reg.-No 0063AQ1350 The following standards/technical specifications have been fulfilled: - ATEX (94/9/EC) when shown upon the product Electromagnetic Compatibility (2004/108/EC) Low Voltage Directive (2006/95/EC) RoHS II (2011/65/UE) The valves comply with the Technical Regulation 753 of Russian Federation concerning the...