Please use 26-578-1101 which includes necessary fittings for installation.
Harwil Q12DS Flow Switch 1/2" NPT
2 amp pilot duty switches on at 10 gpm and switches off at 8 gpm. ABS body, stainless spring arm.
Stationary arm measurements:
- 2" Distance between end of the arm and bottom of the threads
- 2-5/8" Distance between end of the arm and top of the threads
🔧 Parts and fittings for this
| Part | Our part number | Availability | |
|---|---|---|---|
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Flow Switch, Harwil Q8DS, 1"mpt, 25A, w/Drag Strip | Q8DS/A/10502 | 17 in stock |
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Reducer Bushing Fitting 437-251 – 2"SPG x 1-1/2"S | 437-251 | 779 in stock |
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Generic PTFE Teflon/Plumbers Thread Seal Tape A05-0265 | A05-0265 | 214 in stock |
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Silicone, DOW 732, 3oz Tube, Clear | DC-732-CLR-3 | 186 in stock |
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Lasco Reducer Bushing 438-101 – 3/4" SPG x 1/2" Slip | 438-101 | 238 in stock |
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Lasco Fitting 401-007 | 401-007 | 66 in stock |












