Aqua Ultraviolet – Flow Switch (GRID) for Classic & SL Series — Complete with 2" Unions & Cords
Overview
Add automatic protection to your UV system. This in-line flow switch (GRID) interlocks power to the UV so the lamp only runs when water is moving—helping prevent overheated housings, scorched sleeves, and premature lamp failure.
Key Features
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Auto safety interlock: cuts/enables UV power based on actual water flow
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Plug-and-play kit: includes 2" unions and pre-wired cords
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Reduces risk of sleeve discoloration and O-ring damage during dry-run events
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Works with Classic and SL series UV sterilizers
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Service-friendly unions for quick removal and cleaning
Compatibility
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Aqua Ultraviolet Classic and SL UV sterilizers on 2" PVC plumbing
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Freshwater or saltwater systems (non-submersible installation)
Specifications
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Type: In-line flow-sensing power interlock (GRID style)
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Plumbing: 2" slip unions (in/out)
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Use: Horizontal or vertical (follow flow arrow; avoid air traps)
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Electrical: Pre-wired cord set for simple UV power interlock (120V systems)
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Housing: Rigid PVC/engineered plastics for wet-location plumbing (external only)
What’s Included
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(1) Flow Switch (GRID assembly)
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(2) 2" slip unions with O-rings
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Pre-wired power/control cords
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Quick start/installation guide
Installation Notes
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Install after the pump and mechanical filtration; align with the flow arrow.
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Solvent-weld the 2" unions to your PVC; allow full cure before pressurizing.
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Mount the switch so the sensing chamber stays flooded (no trapped air).
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Connect the cords per the diagram to interlock UV power through the flow switch.
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Test by starting/stopping the pump—UV should turn off when flow stops.
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Never submerge the electrical components; keep cords and connections dry/secured.