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I have a site in NYC that needs low/high water level supervisory switches installed?

Question asked by jtaylor@mandsmechanical.com on Aug 18, 2016

I have a site in NYC that needs low/high water level supervisory switches installed, there are 3 concrete surge tanks and 4 combination domestic and fire gravity tanks that are steel with stainless steel liners. with the construction of the tanks i cannot install a Potter WLS water level switch directly into the tanks. can I install a pipe on the outside of the tanks from the bottom to the top and use the Potter WCS water column switch instead and if so which NFPA publication would guide me as the size and valve configuration needed for testing?

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