Stenner (UCCV-DB0) Check Valve Duckbill Only (2 PK) Intelifil (IF-SM-KDF010B5) 10"X4.5" Big Blue 5 Lb KDF-55/GAC Chlorine/Heavy Meta } The Unicel T-0520-05-B is

} The Unicel T-0520-05-B is a 20"x2

Use alone or blend with GAC

California Prop 65 compliant for residential and commercial use

Permanent head stays mounted

Stenner (UCCV-DB0) Check Valve Duckbill Only (2 PK) Intelifil (IF-SM-KDF010B5) 10"X4.5" Big Blue 5 Lb KDF-55/GAC Chlorine/Heavy Meta } The Unicel T-0520-05-B isStenner Chemical Feeder Parts Stenner UCCV DB0 Check Valve Duckbill Only (2 Pack) Replacement duckbill check valves for Stenner chemical feed pumps OEM Stenner Part 2 Pack Duckbill Design The Stenner UCCV DB0 duckbill check valve is the core component inside Stenner's inline check valve assemblies, preventing backflow and ensuring consistent chemical dosing. This is the duckbill insert only, sold in a convenient 2 pack for maintenance and replacement