| 摘要 |
PROBLEM TO BE SOLVED: To effectively maintain a performance such as the combustion or the output of a gas device even when LPG and DME are used at the same time. SOLUTION: In a domestic service gas intake port 12, a three way stop cock 11 as a gas passage changing means is provided. To the first and second inlet ports of the three way stop cock 11, first gas piping 3 and second gas piping are respectively connected. Accordingly, gas from the one gas piping selected by a selective changing operation of the three way stop cock 11 is supplied to domestic main gas piping 10 from the service gas intake port 12. An LPG bomb 2 is connected to the first gas piping 3 and a DME bomb 6 is connected to the second gas piping 7. Respective supply gas pressures are set by a first gas governor 5 and a second gas governor 9 so that inputs are equal.
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