AquaMatic K521-109 1inch Retaining Ring and Nut Assembly (Pair) 1070244 AquaMatic K520-RAJ Seal Kit Butyl this professional-grade maintenance kit is

this professional-grade maintenance kit is specifically engineered for 1/2-Inch K520 Series Composite Body Diaphragm Valves

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AquaMatic K521-109 1inch Retaining Ring and Nut Assembly (Pair) 1070244 AquaMatic K520-RAJ Seal Kit Butyl this professional-grade maintenance kit isAquaMatic K521 109 1" Retaining Ring & Nut Assembly EP (Pair) The AquaMatic K521 109 Retaining Ring & Nut Assembly is a factory original, commercial grade hardware kit designed to securely mount pipe end adapters to AquaMatic K521 Series 1 inch composite body diaphragm valves. This standard EP (EPDM) configuration contains a complete pair of nuts, split retaining rings, and high quality EPDM face O rings. It provides the essential mechanical clamping