Description

BH series VMH electro hydraulic actuator New third generation
Power: 230vAC 50/60Hz, 25 Watts Start 115 Watts
Protection: fluid group 1 Class A IP65 with closed position feed back.
Elektrogas gas safety shut off valve sizing as follows:
BH7 suits the VMH7 21/2 inch, VMH8 3 inch, VMH9 4 inch
BH98 suits VMH93 DN125, VMH95 DN150, VMH98 DN200.
BH912 suits VMH910 DN250 and VMH912 DN300

Manufactured by Elektrogas Italy this third generation new design VMH motor head assembly has been in production since week 48 2018, as per the four digit code on the label i.e. 4818 week 48 year 2018, from week 48 2018 onward are all manufactured as 3rd generation.
Previous generations have an unacceptable albeit a low failure rate. Typical signs of issues are that they become noisy prior to failure.

Replacing the head:
Turn off all power before servicing any part of the system
Make sure an identical spare part is available
Remove the DIN connector plug (8)
Removing the connecting screws (6) at the base of the actuator and remove the damaged actuator. Pay attention to the O ring between the actuator and the valve body. (5)
Reassemble the new one with inverse sequence. If necessary, replace the plug also.

Question 1: when replacing the head would he need to shut off the gas supply? Factory Answer: Not strictly necessary.
Question 2. When replacing the head is there any chance or air getting into the valve and would they then need to purge the line ? Factory Answer: No.

Equivalent To

VMH93, VMH95, VMH98, VMH910, VMH912, BH912, VMH910-12U, 1930.4960, BH98, ELEK01
gas valve motor

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