System Sensor

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Water Flow Detector

The WFD Series waterflow detectors provide a mechanical time delay that is adjusted via an adjustment wheel. This retard mechanism is field replaceable, as is the terminal block. System Sensor also offers several specialty waterflow detectors for unique applications. The WFD-EXP line of explosion-proof waterflow detectors is intended for use in hazardous locations where volatile vapors or particulates may be present.

Model	Pipe Size (inches)	Pipe Size (inches)	Pressure Rating	Contact Rating	Triggering Threshold
WFD20	2	1 (1/4)	450 PSI	2 Form C : 10 A,(1/2)HP @ 125/250 VAC : 2.5 A @ 6/12/24 VDC	4 - 10 GPM
WFD25	2(1/2)	1 (1/4)	450 PSI	2 Form C : 10 A,(1/2)HP @ 125/250 VAC : 2.5 A @ 6/12/24 VDC	4 - 10 GPM
WFD30-2	3	2	450 PSI	2 Form C : 10 A,(1/2)HP @ 125/250 VAC : 2.5 A @ 6/12/24 VDC	4 - 10 GPM
WFD35	3(1/2)	1 (1/4)	450 PSI	2 Form C : 10 A,(1/2)HP @ 125/250 VAC : 2.5 A @ 6/12/24 VDC	4 - 10 GPM
WFD40	4	2	450 PSI	2 Form C : 10 A,(1/2)HP @ 125/250 VAC : 2.5 A @ 6/12/24 VDC	4 - 10 GPM
WFD50	5	2	450 PSI	2 Form C : 10 A,(1/2)HP @ 125/250 VAC : 2.5 A @ 6/12/24 VDC	4 - 10 GPM
WFD60	6	2	450 PSI	2 Form C : 10 A,(1/2)HP @ 125/250 VAC : 2.5 A @ 6/12/24 VDC	4 - 10 GPM
WFD80	8	2	450 PSI	2 Form C : 10 A,(1/2)HP @ 125/250 VAC : 2.5 A @ 6/12/24 VDC	4 - 10 GPM