The California Building Code requires sprinkler control valves to be 
electrically monitored. One of the exceptions is One and Two Family Dwellings, 
13D.


What if it is a stand alone 13D system? (2" water meter with one DCVA to a 2" 
underground, serving a row of 5 town homes with one hour separations between 
units. The 2" underground branches off to each unit. Each unit has it's own 
flow switch and test valve.


I am thinking the exception, for one and two family dwellings, is because the 
control valve is before the domestic service so shutting off the sprinklers 
shuts off the domestic, therefor it is self monitoring. The stand alone serving 
5 units does not have this valve arrangement therefore it would require 
electric monitoring per CBC.


Am I thinking correctly? According to CBC the two control valves on the DCVA 
would need tampers? 


Owen Evans
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