CMP Pressure Test Plug [FG Main Drain] (25215-900-000) laingthermotech A 4-pack filter cartridge set

A 4-pack filter cartridge set helps support routine maintenance for compatible spa or pool filtration systems

Supports cleaner and more dependable system management

but to get it running the way it should

pump tubes can flatten

This OEM air bleed tee is a practical replacement for compatible systems that need the right tee fitting for proper air-bleed plumbing support

CMP Pressure Test Plug [FG Main Drain] (25215-900-000) laingthermotech A 4-pack filter cartridge setThe CMP Pressure Test Plug [FG Main Drain] is a practical replacement test plug for service work where matching the original configuration matters more than making a broad, generic substitution. It is used around drain or main drain service points where correct sizing and compatibility help simplify testing, winterizing, or water movement through the pool or spa system. Key identifying details from the listing include FG Main Drain. Because many CMP,