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Flow Switch – Model Q-16 Paddle Style

Uses

For use in:

  • Boilers
  • Cooling Towers
  • Chillers
  • Water Treatment
  • Irrigation

Models

PIPE SIZE * SWITCHPOINT RANGE (GPM)
MIN. ADJUST. MAX. ADJUST.
ON OFF ON OFF
1″ 4 2 8 7
1 1/2″ 7 5 13 11
2″ 12 7 27 26
2 1/2″ 18 12 35 32
3″ 27 19 52 49
4″ 63 50 123 120
5″ 125 100 238 232
6″ 190 158 350 338

 

* Metal pipe only. PVC and CPVC pipes require special paddles.

Specs

HYSTERESIS (Δ FLOW RATE TO ACTIVATE/DEACTIVATE SWITCH)

≈ 10% at upper end of flow range

≈ 30% at lower end of flow range

DIFFERENTIAL PRESSURE DROPS ACROSS UNIT

Under normal operating conditions:

≈ 1″–3″ pipe, less than 1 psi

≈ 4″–48″ pipe, negligible

WORKING LINE PRESSURE 200 psig max. WORKING TEMPERATURE 250˚F max. continuous. WETTED MATERIALS

Body: Brass Shaft: 304 Stainless Steel Paddle: 316 stainless steel Seal: EPDM

ELECTRICAL SWITCH CHARACTERISTICS

SPDT (single pole double throw) 15A, 1/2 hp @ 125 or 250VAC .A @ 125VDC .A @ 250VDC 10,000,000 Operations Median

Model Q-16 can also be fitted with a SPDT Gold Cross Bar Switch for computer/PLC interface.

 

Diagram

diagram_q-16

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