Inspectors Test Orifice For Fire Sprinkler Systems - Available In 1/2" and 3/4" Head Size::1/2" NPT Sprinkler Head 7ft - Hydra-Finder

7ft - Hydra-Finder

Robust Construction

Fixture is 1 or 2 sided

The sealed retard mechanism is immune to dust and other contaminants

Safe Signal WFD60N Waterflow Detector Switch

Inspectors Test Orifice For Fire Sprinkler Systems - Available In 1/2" and 3/4" Head Size::1/2" NPT Sprinkler Head 7ft - Hydra-FinderInspectors Test Orifice For Fire Sprinkler Systems Available In 1 2" and 3 4" Available In The Following Head Sizes: 1 2" 3 4" To determine what size sprinkler head you have, measure the bottom of your sprinkler head at the base of the threads. The 1 2" fire sprinkler base measures at 3 4". The 3 4" fire sprinkler base measures at 1". Orifice is screwed into inspectors test pipe fitting to simulate the water flow of a fire sprinkler and trigger flow