Dual valve

摘要

A dual valve construction partners first and second valve portions with a mechanical linkage such as gears to operably couple the control stems together. The gears need not be identical and in fact a first gear may have flats so that motion of the first gear need not always move the second gear proportionally. Furthermore, the gears may have differing gear ratios at different portion of the gears.

主权项

1. A dual gas valve construction comprising:
a first valve portion having an inlet, an outlet and a first control stem for adjusting flow of gas from the inlet through the outlet to a first location; a second valve portion similarly constructed as the first valve portion and having an inlet spaced from the inlet of the first valve portion, an outlet and a second control stem for adjusting flow of gas from the inlet through the outlet to a second location separated from the first location; a mechanical linkage coupling the first control stem to the second control stem to form a dual valve, whereby for at least some rotation of the first control stem, the second control stem is moved through the mechanical linkage; said first and second valve portion inlets are spaced apart and are in fluid communication with a common supply; and the outlets of the first and second valve portions are directed to separate rings of a gas burner.