Gas Limiting Orifice Valve

We Design and supply Gas Limiting orifice Valve for Precise Gas Control at Gas Burner. These are mechanical valves to be mounted in gas line before burner. MOC of LOV is CI Body with Brass internals. It is not a isolation valve it is purely a flow adjustment valve.
A Brass shaft is provided with slot for screwdriver on top of it. If we turn the shaft in clockwise direction the flow will reduce and if shaft is turn in anticlockwise direction the flow will increase. Thus by adjusting the Orifice valve and Air Butterfly we can set the burner flame precisely.