Standard Plastic Distributor Heads
|   ||Designed for simple in-out filters such as pH neutralizers taste and odor etc. Fits 2-1/2'' NPSM tank opening. 890S-B has 3/4'' openings reinforced with brass inserts for extra strength and 13/16'' distributor opening. 900M has 1'' FIPT openings with 1.050 distributor opening.
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