C43 Series Water Softeners

The A. O. Smith C43 Series delivers high-capacity water softening for commercial applications. Designed for scalability, the C43 platform supports single through multi-unit configurations to meet varying flow demands, while advanced controls and durable construction ensure reliable performance and long-term serviceability.

C43 Series Water Softeners

Product Details
  • High flow performance supports demanding commercial applications
  • High capacity per tank delivers up to 1,200,000 grains for extended operation
  • Flexible system configurations support single through multi-unit designs
  • Advanced controls provide system visibility
  • Fully adjustable regeneration cycles provide flexible operation
  • High-capacity resin delivers consistent commercial-grade softening performance
  • Durable fiberglass-reinforced mineral tanks resist corrosion for long-term reliability
  • Top-mounted valve design allows easier access for servicing and maintenance
  • NSF-certified components ensure trusted material quality and system integrity

Options

  • Progressive flow operation
  • Separate source regeneration capability
  • ASME-rated tanks (18” and up)
  • Multi-unit system controller
  • Multiple valve sizes
Specifications
Continuous Service Flow Rate (GPM) @15 psi pressure loss
up to 207 gpm
Rated Capacity (Grains @ 15 lb. salt)
up to 1,200,000
Min Pressure (psi)
30 psi
Max Pressure (psi)
100 psi
Min Temperature
40 F
Max Temperature
100 F
Pipe Size
1"-3"
Resin Volume (cu.ft.)
up to 40.0 cu.ft.
Certification
NSF Certified Components