Empty Refillable Cartridge 20" x 4.5" White Replacement UV Lamps3909 Remove the existing air check

Remove the existing air check valve assembly from the control valve body using appropriate wrenches

Pressure Rating

and downstream filtration equipment

The universal cap design fits all standard permanent heads

Empty Refillable Cartridge 20" x 4.5" White Replacement UV Lamps3909 Remove the existing air checkWatts RC C BB 20 50 Empty Refillable Cartridge 20" x 4. 5" White Reusable canister for custom media applications in Big Blue housing systems Refillable 50 Micron Foam Pad 155 Cubic Inches WHY IT WORKS Fill It With What You Need Reusable Design Refill and reuse instead of replacing. The Watts RC C BB 20 50 accepts any granular or specialty media you need for custom filtration applications. Big Blue Standard Fits all standard 20" x 4. 5" Big Blue