Honeywell VQ440MA1048- combination gas valve.
Designed to control and regulate the flow of gas blower burners, atmospheric gas boilers, melting and incineration furnaces, and other gas-burning device.
Gas valve VQ440MA1048 has a built-in pressure regulator
Adjusting the valve is performed in the following order:
• Remove the cap from the top of the coil, which will screw him against
• Place key (hexagon socket 4 mm.) on the hex adjusting
screw and turn the hex key clockwise to increase gas pressure
in the collector, or clockwise to decrease it.
• Return cap on the top of the coil and tighten it until it stops