Air Gaps

For Reduced Pressure Zone Assembly Backflow Preventers

  • The installation of an air gap and drain line are recommended
  • Air Gap installs easily
  • Watts Air Gap Drains are designed to collect water that is being discharged by the relief valve
  • Air Gaps can be installed vertically or horizontally

Select a Model

Select options below to identify the UPC, Order Code, and Repair Kit for a specific Air Gaps

Approval/Certification 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