The J19LM and QJ19LM are Champion brand spark plugs used for garden machinery. The difference between them is their resistors, the J19LM use a regular resistor while the QJ19LM uses a CDI resistor.
The power difference between a cordless leaf blower and a plug in one is that the cordless leaf blower uses less power as it uses a battery whilst plug in one uses more power and higher voltages of power.
plug and play devices are automatically detected by the operating system, where as non plug in play devices are not automatically detected by the operating system.
The RJ19LM has an added resistor to reduce radio interference. You can use either model for your application as they are interchangeable.
A Plug Valve is a Globe Valve. Very generally speaking there are two major catagories of Industrial Process Control Valves, Sliding Stem and Rotary. Globe Bodies valves fall into the category of Sliding Stem Valves. Butterfly and Ball valves fall into the category of Rotary valves. However there are what is referred as Rotary Plug Valves, whereby a partial sphere has a shaft eccentrically mounted, that rotates into and out of a metal or composition seat acting as a plug. Most plug valves are sliding stem.
According to the Champion plug web site they are both bantam height. But a different bantam height. I ran into this and found that the plug looked different where the wire connected and sealed t the plug and that was the only difference.
Champion Spark Plug Co. is currently owned by Federal-Mogul.
This plug is the Champion RCJ7Y.
A sp-34 spark plug to a Champion plug is a small engine spark plug. They can be used for lawnmowers and weed eaters among other things.
Champion Spark Plug QC12YC
The RC14YC in a hotter plug.
If you damaged a Champion RJ19HX spark plug, then you can indeed replace and substitute that with a Champion RJ19LM spark plug due to the similarity in their sizes.
ngk Bm6a its the same plug