Hayward KNOB ACCESSORY KIT

The Hayward Knob Accessory Kit is a specialized hardware set designed to provide a secure, hand-tightened fastening solution for the lids and heads of various cartridge and sand filter systems, such as the Star-Clear and ProSeries models. Constructed from high-impact, weather-resistant reinforced thermoplastic, the knob features an ergonomic, oversized grip that allows pool owners to apply significant torque without the need for specialized tools, facilitating easier access for filter cleaning and maintenance. Internally, the kit typically includes a heavy-duty, corrosion-resistant brass or stainless steel threaded insert and a corresponding washer or spacer, which are engineered to withstand the constant hydraulic vibrations and environmental stressors of a pool pad. Its primary mechanical role is to exert uniform downward pressure on the filter head or dome, ensuring the main O-ring remains fully compressed to maintain a vacuum-tight seal and prevent system leaks. For shipping and logistical purposes, the estimated weight of the Hayward Knob Accessory Kit is approximately 1.2 pounds in its retail packaging, while the actual weight of the hardware components themselves is roughly 0.9 pounds.