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OF240-4

OneFlow Anti-Scale System for up to 4 gpm (15 lpm) - Dual Cartridge

  • Chemical-free, salt-free scale prevention system that helps extend life of coffee makers and other appliances while reducing energy consumption
  • Maximum flow rate: 4 gpm
  • Two filter housings
  • Simple shutoff and filter change with inlet ball valve and filter wrench

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Select options below to identify the UPC, Order Code, and Repair Kit for a specific OF240-4

Approval Information

For product-specific approval information, please refer to the product’s specification sheet 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