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Series-G9

Globe Flow Switch for Water/Oil – ± 1% Repeatability – Easy Adjustment

Models In Stock
  • Precision shuttle-bypass vane design sets flow point externally with a screwdriver - no disassembly required
  • Achieves ±1% repeatability on water or oil flows to trigger alarms or protect critical systems with confidence
  • Bronze/316 SS wetted materials, rated up to 400 psi @100 °F and -20 °F to 180 °F temperature range
  • SPDT switch selectable NO/NC, compact 90° flow path orientation, built for shock and vibration resistance
Series-G9
From $ 900.80
Models In Stock
Globe Flow Switch for Water/Oil – ± 1% Repeatability – Easy Adjustment Series-G9 Series-G9
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Product Overview
  • Accuracy ± 10 %
  • Accuracy Detail ± 10% of set point
  • Electrical Connection Pigtail Leads
  • Filter 150 μ or better
  • Mounting Orientation Vertical Lead wires up
  • Operating Temperature, Max 180 °F
  • Operating Temperature, Min -29 °F
  • Port 1 Size 3/4 in
  • Port 1 Type NPT Female
  • Port 2 Size 3/4 in
  • Port 2 Type NPT Female
  • Measurement Pressure Type Gauge
  • Repeatability ± 1%
  • Repeatability Note ± 1% max deviation
  • Sensor Material Bronze, Acetal; Stainless Steel, Fluoroelastomer, Ceramic
  • Series ID Series-G9
  • Switch Rating 0.17A@120Vac,0.08A@240Vac,0.13A@120Vdc,0.06A@240Vdc
  • Switch Type SPDT NO/NC, Selectable
  • Weight 0.76 kg
  • Wire Gauge 18 AWG

Supported Applications

The Dwyer Series G9 Globe Flow Switch is designed for accurate flow detection in water and oil. The series provides a mechanism to trigger alarms on interlocking shutdown circuitry when the flow rate is incorrect, as well as protecting bearings, gears, and cooling systems.

Operating Conditions & Performance

The Series G9 operates within a process temperature range of -20 to 180°F (-29 to 82°C) with a maximum pressure rating of 400 psi (27 bar) @ 100°F (37.8°C). Performance specifications include ±1% repeatability and set point accuracy of ±10%. The switch type is SPDT, rated for resistive loads including 17A @ 120 VAC, .08A @ 240 VAC, .13A @ 120 VDC, and .06A @ 240 VDC. A required filtration of 150 microns or better is specified for proper operation.

Configuration Options

The series offers configurable actuation set point ranges to match specific flow requirements:

  • G9-21: 0.75 - 4.0 GPM (2.8 - 15.1 LPM)
  • G9-22: 2.0 - 8.0 GPM (7.6 - 30.3 LPM)
  • G9-23: 7.0 - 14.0 GPM (26.5 - 53.0 LPM)

Construction features a bronze housing with wetted materials including Acetal for the shuttle, 316 SS spring, Fluoroelastomer O-ring, and Ceramic components. The unit includes 18 AWG, 24" (61 cm) polymeric lead wires for electrical termination and utilizes a 3/4" female NPT process connection.

Key Product Differences

The Series G9 is distinguished by its external adjustment capability; a shuttle bypass vane inside the housing allows flow settings to be changed using an ordinary flat blade screwdriver without disassembly. While set points are based on a vertical, lead wires up position, the unit supports mounting in any orientation.

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