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Hardness and Cyanuric Acid
after remodeling or replastering
The unicover fits over most raised anti-vortex main drain covers
then broadcast evenly
Compatible with all sanitizing systems
Hayward Slide Valve Assembly for ProGrid DE Filters | SP0410X502S Lubricants Hardness and Cyanuric AcidThe Hayward Slide Valve Assembly (SP0410X502S) is the OEM replacement 2" slide valve assembly for Hayward ProGrid DE Filters. What It Does This slide valve assembly controls access to the filter's internal grid assembly and manages air release during startup and priming. The one piece clamp design allows quick, tamper proof access to internal filter components without disturbing existing plumbing connections, while the built in manual air relief valve
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