The VMH type valve is a safety shut off valve for gas with 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 others gas consuming appliances. Depending on
series, VMH valves can be used in pipeline with pressure from 3.2 to 0.2bar (see Tab. 2).
The valves are made of aluminum alloy with a range for connections from DN 65 up to DN 200.
Pipe connections meet group 2 and backpressure sealing is compliant with class A, according
to EN161 requirements.
Suitable for use with air and non-aggressive gases included in the 1, 2 and 3 families (EN 437).
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 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 G1/4 pressure gauge on two sides in both inlet and outlet chamber to connect
manometers, pressure switches, leakage tester or other gas equipments.
The actuator is provided with ISO 4400 plug for easy cabling. The protection class is IP65 (EN
If compressed air is available, the hydraulic actuator can be replaced with a pneumatic one
(VMP series). For further information see VMP datasheet.
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.
Connections Flanged PN16 – ISO 7005 from DN65 to DN200
Voltage rating (-15%/+10%) 230 VAC 50/60 Hz
110 VAC 50/60 Hz
Power consumption see Tab. 2
Ambient temperature -15°C / +60°C
Max. operating pressure see Tab. 2
Flow capacity see Tab. 2
Closing time < 1 second
Opening time see Tab. 2
Filter 600 μm, metal mesh
Protection class IP65 (EN 60529)
Cable gland Plug ISO 4400 (EN 50262)
Materials in contact with gas Aluminium alloy :
Brass, Stainless steel, Plated steel, Anaerobic adhesive, Nitrile rubber (NBR), Fluoro elastomer (FPM), Polytetrafluoroethylene (PTFE)