Tee flow switch manufacturers tell you that the fluid passage inside the flow switch housing has a piston with a permanent magnet inside. When the piston is pushed by the pressure differential caused by the flow, the magnetic piston actuates the sealed reed switch inside the unit. The diameter of the piston determines the starting flow. Tee flow switch manufacturers tell you that the stainless steel spring pushes the piston back when the flow decreases.

1. The manufacturer of the Tee flow switch tells you that the factory adjustment of the flow switch is near the minimum flow value, and it should not be adjusted to a position lower than the factory setting during use, otherwise the switch will not be able to return to the "no flow" position.
2. The manufacturer of the Tee flow switch tells you that if you need to increase the flow value, you should turn the adjusting screw clockwise. If you want to lower the flow value after increasing the factory setting value, turn the adjustment screw reversibly.
3. After the adjustment, check that the setting value of the flow switch is not lower than the factory setting value. By pressing the main lever several times, check whether the switch has a "click" sound when the main lever returns. The clock turns the adjusting screw until there is a "click" sound when the lever returns.
4. The manufacturer of the Tee flow switch tells you that the setting screw of the sealing paint cannot be adjusted. Once changed, it will destroy the control of the flow switch or cause the adjustment to fail and not work.
5. The manufacturer of the Tee flow switch tells you that the flow adjustment is too high, and the flow direction piece cannot be driven when the flow is low, and the switch cannot operate. The flow adjustment is too low, the switch is too sensitive, resulting in malfunction.