AP431 3M Aqua-Pure Inline Filter Replacement Cartridge

Price $36.99
Availability: In stock
Fits 3M Aqua-Pure AP430 and AP430-SS filtered hot water systems
  • Extends the life of your hot water system by reducing the build-up of scale and corrosion
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If you've got a 3M Aqua-Pure AP430 or AP430-SS Hot Water Filter System, and you need some replacement filters, look no further. The AP431 is the replacement filter for your system.
Package Qty 1
Used In Brands Aqua-Pure
Manufacturer's Id AP431
UPC 051128889886
Advertised Size (in) 10-3/4 x 2-3/4
Actual Size (in) 8 3/4 inches (length) x 2 1/2 inches (outside diameter)
Actual Size (cm) 22.23 x 6.35
Filter Life (months) 6 months
Operating Pressure (psi) 0 - 125
Operating Temperature (°F) 40 - 100
Operating Temperature (°C) 4.4 - 37.8
Flow Rate (gpm) 10
Flow Rate (lpm) 37.85
Fitting Type NPT
Fitting Size (inches) 3/4 inch

The AQUAPURE-AP431 is comparable with the following part numbers

3P777 40161502
AP430 AP430SS
AP430-SS AP431
AP-431 AP43110
AP431-10 AP-431-10

The AQUAPURE-AP431 fits the following model numbers


Installation Guide

User Guide


  1. The 3M Aqua-Pure AP431 hot water system cartridge needs to be replaced every 3-6 months. The cartridge may need to be replaced sooner depending on your water quality and your water usage
  2. Shut off incoming water supply
  3. Open nearest hot water outlet for 10 seconds to relieve pressure
  4. Remove cartridge by unscrewing counterclockwise from tee
  5. Replace with new AP431 cartridge
  6. Turn on water supply

Reset Instructions