WFDN Series Waterflow Detectors

System Sensor’s line of waterflow detectors provides that reliability when monitoring water flow within a wet pipe fire sprinkler system. These vane-type paddle designs are available in a variety of configurations and accommodate 2˝ through 8˝ pipe for commercial riser applications, as well as 1˝ NPT connections for residential or branch line signaling.

The WFDN series detectors provide a mechanical delay that is adjusted via waterflow monitoring an adjustment wheel. This retard mechanism is field replaceable, as is our terminal block. Both are unique features offered only by System Sensor.

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Description

Pipe Schedule 10 through 40*
UL Pressure Rating 450 PSI*
Enclosure Rating NEMA 4**
Agency Approvals UL, CSFM, MEA Except Where Otherwise Noted
Pressure Rating – 450 psi
Contact Rating – 2 Form C: 10 A, 1/2 HP @ 125/250 VAC; 2.5 A @ 6/12/24 VDC
Triggering Threshold – 4-10 GPM

* Except WFDT Models
** Except WFDTH Model

Model No & Pipe Sizes

WFD20N 2˝
Hole Size – 1 1/4″
Additional Agency Approvals FM, CNTC

WFD25N 2.5˝
Hole Size – 1 1/4″
Additional Agency Approvals FM, CNTC

WFD30N 3˝
Hole Size – 2″
Additional Agency Approvals FM

WFD40N 4˝
Hole Size – 2″
Additional Agency Approvals FM, CNTC

WFD50N 5˝
Hole Size – 2″
Additional Agency Approvals FM, CNTC

WFD60N 6˝
Hole Size – 2″
Additional Agency Approvals FM, CNTC

WFD80 8˝
Hole Size – 2″
Additional Agency Approvals FM, CNTC

WFDT 1˝ NPT Connection
* Pipe Schedule (Refer to data sheets)
* UL Pressure Rating 250 PSI
Additional Agency Approvals CNTC

WFDTH 1˝ NPT Connection
* Pipe Schedule (Refer to data sheets)
* UL Pressure Rating 250 PSI

WFDTNR 1˝ NPT Connection
* Pipe Schedule (Refer to data sheets)
* UL Pressure Rating 250 PSI

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