Flow Switch, Harwil, 1/2" MPT, 16-23 GPM, .5 Amp, 1-1/2" or 2" Plumbing : Q12DSMSC

Product Details

The Harwil Q-12 Flow Switch is a versatile and reliable fluid flow verification device widely used in pool, spa, and fluid control systems since the mid-1980s. It offers adjustable settings to suit various applications, ensuring safe and efficient operation by confirming adequate flow before system activation.

• Manufacturer: Harwil
• Model: Q-12 (Q12DSMSC)
• Plumbing Size: 1/2" Male Pipe Thread (MPT); fits 1-1/2" or 2" plumbing
• Flow Range: 0.7 to 590 GPM (typical operating range)
• Typical Operating Flow: 16 to 23 GPM
• Maximum Flow: Up to five times normal flow
• Electrical Rating: 0.5 Amp switching capacity
• Voltage Switching Range: 5 VDC to 240 VAC
• Pressure Drop: Very low, typically less than 1.0 psig at normal flow
• Applications: Used to verify fluid flow in swimming pool salt chlorine generators, spas, hot tubs, chillers, and water disinfection systems
• Compatibility: Can power small ice cube relay coils and some 30A power relays
• Pipe Size Compatibility: Suitable for ¾ inch to 6 inch pipes
• Alternate Part Numbers: 5-20-0025, Q-12DS50/1.5/6M/NO/1 (Harwil), 34-0217 (HydroQuip), 5-20-0009

The Harwil Q-12 flow switch is a trusted component in fluid control systems, providing critical flow verification to protect equipment and ensure safe operation across a variety of industrial and residential applications.