Darlly 40257 Filter Cartridge (FC-2399) (4CH-22) (PFF25) grasslin Designed for natural-gas low NOx

Designed for natural-gas low NOx R185A applications

Matching the correct pin arrangement helps preserve dependable communication between the topside and the main system

When a very large heavy-profile O-ring becomes worn

This type of part is especially useful during filter maintenance when the upper tank body is opened for inspection or cleaning and the original seal should be renewed before reassembly

The PSCV2S is a practical service part when a compatible Hayward plumbing system needs a check valve to restore dependable one-way flow control

Darlly 40257 Filter Cartridge (FC-2399) (4CH-22) (PFF25) grasslin Designed for natural-gas low NOxA filter cartridge helps keep the water care system working effectively by collecting debris during circulation, and this Darlly cartridge is designed for compatible applications referencing FC 2399, 4CH 22, and PFF25. When the cartridge media becomes worn out or restricted, filtration results can gradually fall below the standard the system should deliver. The multiple cross reference numbers give this cartridge practical value because filter