discussion of cast iron scale in a thread in ask the plumbing experts prompts me to post this.
Not sure how long the bearings will last doing this, but I found out by accident that the 3/8" warthog makes a GREAT descaling nozzle. I ran mine out of oil during a job in cast iron, and it takes off and spins like mad when that happens.
I had a lot of hose in the pipe, and it took a while to get it back to oil it. This was in a line hung overhead in a park garage, and I could hear the nozzle bouncing around and knocking the walls like crazy on the way back, enough I was a little scared it might even crack the pipe. Knocked all the scale right off.
Not sure how long the bearings will last doing this, but I found out by accident that the 3/8" warthog makes a GREAT descaling nozzle. I ran mine out of oil during a job in cast iron, and it takes off and spins like mad when that happens.
I had a lot of hose in the pipe, and it took a while to get it back to oil it. This was in a line hung overhead in a park garage, and I could hear the nozzle bouncing around and knocking the walls like crazy on the way back, enough I was a little scared it might even crack the pipe. Knocked all the scale right off.
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