Hayward ROLL PIN

The Hayward Roll Pin is a specialized mechanical fastener designed to secure the bump handle to the bump shaft in Perflex extended-cycle D.E. filters. Manufactured from high-tensile, corrosion-resistant stainless steel, this cylindrical spring pin features a hollow center and a longitudinal slit that allows it to compress slightly during installation. Its primary mechanical function is to create a high-friction, interference fit within the aligned holes of the handle and shaft, effectively locking them together into a single rigid assembly. This connection is critical for transmitting the manual force from the handle to the internal tube sheets, enabling the "bumping" action that regenerates the filter media. Because it is under constant shear stress during the cleaning cycle, the roll pin is engineered to resist deformation and fatigue while withstanding continuous exposure to moisture and pool chemicals. For shipping and logistical purposes, the estimated weight of the Hayward Roll Pin is approximately 0.02 pounds in its retail protective packaging, while the actual dry weight of the individual steel pin is roughly 0.01 pounds.