| 摘要 |
A mixing valve for gaseous fluids wherein the fluids are introduced into separate chambers, the pressure of the fluids in each chamber is equalized because of a gravity biased balancing cover in the chamber to open the chamber or chambers to the ambient atmosphere in the event the pressure inside a chamber exceeds or falls below the ambient pressure. A blower is utilized to draw the fluids from said chambers through exit openings proportioned to the desired percentage of each fluid to be mixed by and expelled from said blower.
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