A flow switch helps confirm water movement before connected equipment is allowed to operate, and this Harwil Q8DS version is a 25 amp model with a 1 inch male pipe thread connection and drag strip using the Q8DS/A/10502 reference. Heavier-duty flow switches like this are useful where the application calls for stronger switching capability and dependable response in the water path.This switch has practical value because the drag strip design and higher amp rating make it a more purpose-built control component than a lighter-duty alternative. A properly selected Harwil Q8DS switch helps support dependable flow sensing and contributes to more reliable equipment protection in compatible systems.This type of part is especially useful when servicing heaters or related systems that depend on a higher-rated flow switch to maintain intended operating safeguards. That helps restore original control performance more directly and with less guesswork.Installed in the proper application, this flow switch helps support cleaner flow verification and more dependable overall system control. Harwil Q8DS flow switch rated at 25 amps with 1 inch male pipe thread connection Includes drag strip for compatible flow-sensing applications Helps verify water movement before equipment operates Useful in higher-rated heater and control systems Improves service confidence and operational reliability
![Harwil Q8DS Flow Switch [1" MPT] [25A] [w/Drag Strip] (Q8DS/A/10502)](https://cdn.shopify.com/s/files/1/1751/9347/files/26-578-1000_XL.jpg?v=1715147686&width=480)
![Harwil Flow Switch W/ Drag Strip [1" NPT] (25a) [Q8DS] (Q8DS/A/10502)](https://cdn.shopify.com/s/files/1/0574/4014/1354/products/Q8DS_A_10502.jpg?v=1769976093&width=480)
