FS-204-W

Paddle-Type Flow Switches

  • Used to accurately monitor flow in pipelines servicing water systems, heating systems, air conditioning, and processing installations in industrial and commercial applications
  • Flow switches are designed to act as automatic control or safety devices for liquid flow
  • Single pole double throw switch operates signal devices, motors, alarms, metering devices, and heating units
  • Size 1 in. (25mm) NPT pipe connection for pipes 1 in. - 6 in. (25 – 150mm)

Select options below to identify the UPC, Order Code, and Repair Kit for a specific FS-204-W

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