Built for targeted repair work, this replacement nut is a practical replacement part when the original component is worn, damaged, missing, or difficult to reuse. The part is suited for work on Pentair PacFab equipment, where correct sizing and connection geometry help avoid unnecessary downtime and repeated disassembly. The 191478 hardware is best used where the original fastener shows corrosion, rounded edges, thread wear, or has been lost during disassembly. A practical choice for keeping compatible filter, pump, or valve systems in service Application-focused replacement for ST 1-7/8" Nut Works as a targeted replacement when the surrounding assembly is still serviceable Category: Nuts Bolts & Screws Confirm the part number and model family before ordering to avoid fitment issues.
