What safety precautions should be taken when using dimethyl ether as a substitute for liquefied petroleum gas fuel?

The most important thing to note is that the rubber components in your gas cylinders, stoves, valve seals, stuffing boxes, etc. need to be replaced; otherwise, there is a risk of leakage. The national chemical industry standard HG/T 3934—2007 \"Dimethyl ether\" contains the following warning: \"Dimethyl ether has a certain swelling effect on some types of rubber.\" ”In recent years, it has become an undeniable fact that the addition of dimethyl ether to household liquefied petroleum gas before filling it into cylinders has led to valve leaks. Due to the special requirements of dimethyl ether on rubber, the rubber seals used in liquefied petroleum gas cylinder valves are typically corroded by dimethyl ether, resulting in leaks. According to the test results conducted by the **Gas Appliance Quality Supervision and Inspection Center at the beginning of 2008, as the content of dimethyl ether in the mixture increased, the dimensional size of the rubber seals on the cylinder valves gradually decreased, resulting in reduced sealing performance and an increased likelihood of leaks. You are now pure dimethyl ether, so a leak is even more dangerous. Then there are the packing glands of various valves; for those that use oil-impregnated graphite packing, any components made of rubber should preferably be replaced with polytetrafluoroethylene. . . The swelling of rubber by dimethyl ether is the biggest hazard. . .

In the existing system, using dimethyl ether mainly involves replacing some seals with those resistant to dimethyl ether, as well as adjusting the air valves to a lower setting during use