Harwil Flow Switch Q12DSMSC

Flow Switch, Harwil, 1/2" NPT, 16-23 GPM, 2 Amp, 1-1/2" or 2" Plumbing
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Harwil Flow Switch Q12DSMSC
#1 Flow Switch
Since the mid 1980's the Harwil Q-12 flow switch has been used by some of the largest companies in the Pool & Spa and fluid control industries. The Q-12 has several factory adjustable parameters that provide the flexibility to meet the requirements of almost any application. The Q-12 verifies fluid flow, typically in conjunction with another device. For example most of swimming pool salt chlorine generators use the Q-12 to verify sufficient flow before the generator is energized. In a spa or hot tub the Q-12 ensures sufficient flow to prevent the water heater from a meltdown. In a chiller the Q-12 prevents the system from freezing. At home the Q-12 turns on the water disinfection system when someone is getting a glass of water.
Additional Information

Features and Specifications

  • Amp- 2
  • Connection- 1/2" NPT
  • Flow- 16 GPM
  • Immersed Length- 2-9/16"
  • Power the driving coil of small ice cube relays as well as some 30A power relays.
  • Switches 5VDC to 240VAC

Alternate Part Numbers
  • 5-20-0025
  • Q-12DS50/1.5/6M/NO/1 (Harwil)
  • 34-0217 (HydroQuip)