CLS-125

LOCKSMITH™ CLS-125 Series Simplex Water Softeners, Pipe Size 1 1/4 IN

  • High‑efficiency conventional cation exchange softening technology
  • Watts LOCKSMITH™ control valve with advanced electronic programming
  • Electronic controller stores and displays key operational history
  • Metered, demand‑initiated regeneration
  • Regenerates only when necessary to save water, salt, and time
  • Exchanges calcium and magnesium ions for sodium ions
  • High‑capacity ion exchange resin for effective softening
  • Non‑corrosive fiberglass mineral tank with thermoplastic inner liner
  • Available in multiple resin capacities and flow rate options

Approval/Certification Information

For product-specific approval information, please refer to the product’s specification sheet (see literature section above) or ask a Watts representative. For general information regarding any approval certification partners identified in the specification sheet, please visit our certification partners’ websites:


ASSE CSA FM Approvals NSF
UL ULC USC WQA