Dwyer Series G9 Piston Globe Flow Switch

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Dwyer Series G9 Piston Globe Flow Switch provides accurate flow detection in water and oil with ±1% repeatability. A shuttle bypass vane inside the housing is controlled externally using an ordinary flat blade screwdriver, allowing flow settings to be changed without disassembly.

Shuttle or piston flow switches are sensors with an electrical contact output at a specific flow rate. Models are used with oil, air, water, and gases. Applications include oil flow control, low flow detection in cooling lines, and high-pressure lubrication systems. Rugged construction and excellent chem ical compatibility simplify flow/no flow detection.

Each switch is constructed of non-corrosive materials and resists shock and vibration. The Series G9 is suitable for triggering alarms on interlocking shutdown circuitry when the flow rate is incorrect and for protecting bearings, gears, and cooling systems.

Dwyer Series G9 Features

Flow detection in water and oil with ±1% repeatability
A shuttle bypass vane inside the housing is controlled externally using an ordinary flat blade screwdriver

Specification

Service	Compatible liquids.
Wetted Materials	Housing: bronze; Shuttle: Acetal; Spring: 316 SS; O-ring: Fluoroelastomer; Other: ceramic.
Temperature Limits	-20 to 180°F (-29 to 82°C).
Pressure Limits	400 psi (27 bar) @ 100°F (37.8°C).
Accuracy	±10% of set point.
Repeatability	±1% maximum deviation.
Switch Type	SPDT.
Electrical Rating	17 A @ 120 VAC, .08 A @ 240 VAC, .13 A @ 120 VDC, .06 A @ 240 VDC.
Electrical Connections	18 AWG, 24" (61 cm), polymeric lead wires.
Process Connection	3/4" female NPT.
Mounting Orientation	Any position. Set points shown are based on vertical, lead wires up position.
Required Filtration	150 microns or better.
Weight	1 lb, 11 oz (0.76 kg).
Agency Approval	CE.