Passing a gas leak test means a stove is safe. Passing a combustion test means it actually cooks well. Flame quality — color, stability, and shape — is the visible proof that your nozzle sizing, gas flow, and burner assembly are all correct. Here is how to verify it on your local assembly line.
A properly adjusted gas stove burns with a blue, steady flame with a clean inner cone and no yellow tips. A correct flame is the signature of complete combustion: efficient gas use, no soot, no carbon monoxide. If the flame is yellow, lazy, or lifts off the burner, something is wrong.
A yellow flame usually means the nozzle aperture is too large for the gas, or the air intake is blocked. A lifting flame means too much gas pressure or a too-large aperture. These are exactly the faults combustion testing catches — and they trace back to nozzle sizing, the same reason correct aperture selection matters at the parts level.
THREEMI advises CKD partners on flame-testing equipment and procedures, so every locally assembled stove leaves your line burning clean. Combined with gas leak testing, combustion testing is what makes your local brand trustworthy.
THREEMI is the export brand of Shenzhen Sanmi Manufacturing Co., Ltd., a professional gas stove and kitchen appliance factory in Guangdong, China. With 400+ employees, a 20,000㎡ production facility, and an annual output of 3 million units, we serve wholesalers, distributors, brand owners, and e-commerce sellers in over 30 countries. Our factory is certified ISO9001, CCC, CE, UL, GS, ETL, NF, and SASO.
We supply complete gas stove CKD (Complete Knock Down) kits, plus assembly guidance, worker training support, and equipment purchasing advice — so you can build a reliable local manufacturing operation. Contact us to plan your CKD program.
WhatsApp: +86 186 7003 0673
Email: logan@threemi.com
Website: www.threemi.com
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