Channel Systems - trench drain
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Trapprimer for floor drain
TrapPrimer types
Double Check Assemblies (DCA) are the most commonly approved type of device for inline underground sprinkler systems and a smart choice for interior or underground installations. Double check valve assemblies for backflow preventers are less susceptible to frost damage because they are usually installed below ground or in a basement making sprinkler system winterization much simpler.
8615510865705 
8615510865705