Pentair Small CNC Filter Lid Replacement (178548Z) raypak An in-line heater is useful

An in-line heater is useful because it provides direct heating within the bath plumbing path while preserving compatibility with systems built around this specific heater platform

Useful for more complete and dependable filter service

Useful when board or display issues affect operation

barb/slip style

making it a versatile choice for routine maintenance rather than highly specialized conditions

Pentair Small CNC Filter Lid Replacement (178548Z) raypak An in-line heater is usefulThis small CNC filter lid replacement is designed for compatible Pentair cartridge or filter assemblies where the original lid has cracked, warped, become difficult to seal, or suffered damage during service. A dependable lid is important for proper filter closure, pressure containment, and ease of maintenance. Replacing the lid can restore safer, cleaner filter operation without changing the entire filter body. Always confirm the filter model, lid