Pentair R173573 Cartridge Replacement - CNC Plus 320

What This Part Is Used For
Pentair R173573 Cartridge Replacement - CNC Plus 320 is a replacement filter cartridge for Clean and Clear Plus 320 filtration systems. It provides mechanical filtration to remove debris and fine particles from pool water.

Why This Part Matters
A worn cartridge reduces water flow and filtration efficiency. Replacing it restores proper circulation and stable filter pressure. Maintaining clean filtration helps protect pumps, heaters, and automation components.

Key Features and Specifications

• Manufacturer part number: R173573
• Replacement cartridge element
• For Clean and Clear Plus 320 filter systems
• Cartridge style filtration
• Removes debris and fine particles
• Confirm exact filter model before ordering

Installation and Fitment Guidance
Shut off pump and relieve filter pressure before opening the tank. Inspect tank O-rings and sealing surfaces during replacement. Confirm by manufacturer part number before ordering.

About the Pentair Brand
Pentair manufactures Clean and Clear Plus cartridge filters widely used in residential pools. Their filtration systems are known for serviceability and strong water clarity. Pentair supports long term maintenance with OEM replacement cartridges. The brand is trusted by pool professionals nationwide.

Common Service Context
This cartridge is typically replaced during seasonal filter maintenance or when pressure remains elevated after cleaning. It is also installed during full filter rebuilds.