Hayward Union [1 1 2" Slip x 2" Spigot] [Flush] [Qty 2] (SP1500UNPAK2C) dowcorning A standpipe assembly plays an A standpipe assembly plays an important role in maintaining the internal flow path of the filter Maintains reliable operation Supports cleaner and more dependable plumbing fitment A union like this is useful because it allows the connection to be disconnected for service later while still supporting a clean
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