Hayward RETAINER ROD

The Hayward Retainer Rod is a specialized structural fastener designed to secure and align the internal components of a pool filtration system, most commonly found within the grid assemblies of Diatomaceous Earth (DE) filters. Manufactured from high-tensile, corrosion-resistant stainless steel, this long, threaded rod passes through the center of the filter grid nest to provide the necessary compressive force to hold the top manifold and bottom collector together. Its primary mechanical function is to maintain a rigid, unified structure that prevents the filter grids from shifting or vibrating under the intense hydraulic pressure generated by the pump, ensuring that the water flow remains directed through the DE-coated fabric without bypassing the seals. The rod is engineered to withstand constant submersion in chemically treated water and resists the pitting and oxidation that can occur in salt-water environments. By providing this central tension, it ensures the airtight and watertight integrity of the entire internal filtration assembly. For shipping and logistical purposes, the estimated weight of the Hayward Retainer Rod is approximately 0.8 pounds in its retail protective packaging, while the actual weight of the stainless steel rod itself is roughly 0.55 pounds.