Waterway Crystal Water Tank Body w/ Labels | 550-4407 Main Drains Union Adapter Package (PKG 188Z)

Union Adapter Package (PKG 188Z) is the OEM replacement union adapter set for the Pentair System 3 Modular Media Filter and MasterTemp Heater series

one-minute phosphate test

Note the baseline pressure reading immediately after a clean backwash or cartridge rinse — when the reading climbs 8–10 psi above that baseline during normal operation

Gray SP1072S2GR Hayward Standard Square Cover Skimmer – White SP1072S2SQ Hayward SkimMaster Round Skimmer – 2″ FIP – 4

and 2 nuts — one union assembly for each end of the IntelliChlor salt cell

Waterway Crystal Water Tank Body w/ Labels | 550-4407 Main Drains Union Adapter Package (PKG 188Z)