Elektrogas VMH Safety Shut Off Valves

Description

Elektrogas VMH Safety Shut Off Valves for gas with a hydraulic actuator DN65 – DN300. The Elektrogas VMH type valve is a safety shut off valve for gas with a hydraulic actuator. It is suitable for air or gas blocking and releasing controls, required in the main pipe of gas power burners, atmospheric gas boilers, industrial kilns, and other gas-consuming appliances.

Elektrogas VMH Feature

The valves are made of aluminum alloy with a range for connections from DN 65 up to DN 300.
Pipe connections meet group 2.
Suitable for use with air and non-aggressive gases included in the 1st, 2nd and 3rd families (EN437).
Special versions for aggressive gases.
The valve is open only when energized: if, for any reason, power supply goes down, the valve
closes immediately (intrinsic safe).
Qualified for continuous service (100% ED).
Size DN65-80 is equipped with a flow rate adjustment.
An incorporated fine mesh filter protects the valve seat and disc as well as downstream components and prevents dirty contamination.
Provided with the G1/4″ pressure gauge on two sides in both inlet and outlet chamber to connect manometers, pressure switches, leakage tester or other gas equipment.
The actuator is provided with ISO 4400 plug for easy cabling. The protection class is IP65 (EN 60529).
The actuator is provided with a led to visualize when it is energized.
All components are designed to withstand any mechanical, chemical and thermal condition occurring during typical service. Effective impregnation and surface treatments have been used to improve mechanical sturdiness, sealing, and resistance to corrosion of the components.
Valves are 100% tested and fully warranted.

Specification

Connections	Flanged PN16 – ISO 7005 from DN65 to DN300
Voltage rating (-15%/+10%)	230 VAC or 110 VAC 50/60 Hz
Power consumption	20VA (START 110 W)
	Only for DN 250–300: 25VA (START 115W)
Ambient temperature	-15°C / +60°C
Max. operating pressure	see Tab. Dimension
Flow capacity	see Tab. Dimension
Opening time	see Tab. Dimension
Filter	600 µm, metal mesh
Protection class	IP65 (EN 60529)
Cable gland	Plug ISO 4400 with cable gland PG9
Materials in contact with a gas	Aluminum alloy	Anaerobic adhesive
	Brass	Nitrile rubber (NBR)
	Stainless steel	Fluoroelastomer (FPM)
	Plated steel	Polytetrafluoroethylene (PTFE)

Dimension

Model	Conn.	Pmax	Opening	Max cycles	Overall dimensions [mm]					Weight
		[bar]	time *1 [sec]	per hour *2	Overall dimensions [mm]					[Kg]
		[bar]	time *1 [sec]	per hour *2	A	B	C	D	h	[Kg]
VMH7*	DN65	1,6	10..15	60	200	305	350	536	4×18	14
VMH8*	DN80	1,6	10..15	60	200	305	350	536	8×18	14
VMH9*	DN100	1,3	15..25	40	250	350	366	571	8×18	18
VMH93*	DN125	0,5	25..40	30	310	460	461	671	8×18	34
VMH93U	DN125	1,3	25..40	20	310	460	461	671	8×18	34
VMH95*	DN150	0,5	25..40	30	310	460	461	671	8×23	36
VMH95U	DN150	1,3	25..40	20	310	460	461	671	8×23	36
VMH98*	DN200	0,2	35..50	20	370	546	494	730	12×23	52
VMH98U	DN200	1,3	35..50	15	370	546	494	730	12×23	52
VMH910U	DN250	1,3	40..60	15	405	600	560	852	12×28	59
VMH912U	DN300	0,6	45..75	15	460	700	596	923	12×28	106

model with CE 0063CO1798 certificate

*1 opening time depends on ambient temperature, real voltage, and inlet pressure
*2 VMH valves are not suitable for a very high number of cycles, as used in pulse firing.

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