1. Install the FCT tee fitting first, then install the Flow-Sync Sensor into the fitting.
2. Observe the following general rules when choosing the sensor location and preparing to install:
3. Flush system with plug in place before installing the Flow-Sync sensor, to prevent damage to the impeller.
4. Always install Flow-Sync together with a Master Valve, to provide overflow protection.  Install the Flow-Sync and Master Valve as near the point of connection to the water supply as possible.
5. Flow-Sync requires a section of straight pipe on either side of the tee fitting to provide accurate measurement of flow. Tees, ells, and other fittings cause turbulence which affects accuracy.
   • There must be a length of straight pipe (with no fittings) at least 10 times the diameter of the pipe upstream from the Flow-Sync (toward the water supply).
   • There must be a length of straight pipe (with no fittings) at least 5 times the diameter of the pipe in the down- stream direction (toward the sprinklers).
   • Example: FCT-200 is installed in a 2"/50 mm diameter pipe. The tee should have 20"/50 cm of straight pipe upstream, and 10"/25 cm straight pipe downstream.
6. Installing the Flow-Sync and FCT assembly in an irrigation valve box is recommended for ease of maintenance later.
7. Flow-Sync has an impeller which will turn in the flow of water. If the water source is not a public water supply, add a filter upstream from the Master Valve and Flow-Sync to protect the impeller from rocks or stones, which may damage the impeller.

The FCT tee fitting is designed for glue (“slip”) connection. Use approved PVC solvent-welding glue to install either threaded fittings, or directly into the irrigation pipe if desired.

1. Minimum 10x pipe diameter from nearest turn in system
2. MAIN LINE OR LATERAL LINE
3. WATER FLOW
4. Minimum 5x pipe diameter from nearest turn in system

Note: Avoid excess glue when attaching fittings. Uncured blobs of excess glue on the fitting’s interior can interfere with paddle wheel operation.