Description
The Pentair 178816 Drain Plug with O-Ring is a factory-original replacement component engineered for Pentair FullFloXF 4000 Series, C Series, and F Series filter systems. This package pairs a sturdy drain plug with a precision-fit O-ring to form a secure, watertight closure at the drain port, which is essential for preserving filtration efficiency and preventing unwanted water loss. The drain plug enables convenient tank draining during cleaning and sand or cartridge service, ensuring proper water management throughout the maintenance process. Designed for exact compatibility with the FullFloXF product line, both components are manufactured from heavy-duty materials that withstand the physical and chemical demands of pool environments. The O-ring delivers a tight, gap-free seal that guards against drips and seepage.
