ECN Forum Forums Photo Discussion Forums Photos for General Discussion Water Line Switch

I was installing a new electrical hookup for a disposal last week and ran across this. The supply for the old disposal was run through this and then to a snap switch inside the sink cabinet. The home was built in the 1870's and I was told the kitchen was added around 1900.

This switch was incorporated in the cold water supply line under the sink. I'm interested in what purpose this served at one time.

Thanks in advance. Jeff (electricianjeff)