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WFD25N | System Sensor 2-1/2″ Vane-Type Water Flow Switch NEMA 4
- Regular price
- $426.55
- Sale price
- $426.55
- Regular price
-
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Product Description P/N: WFD25N
Description
The System Sensor WFD25N is a vane-type water flow switch designed for 2-1/2 inch steel pipe in wet fire sprinkler systems. It detects water movement within the piping network and provides electrical signaling for fire alarm activation. The unit features a NEMA 4 enclosure for indoor and outdoor installations and supports pressure ratings up to 450 PSI.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | System Sensor |
| Category | Fire Safety |
| Part Number | WFD25N |
| Subcategory | Water Flow Switch |
| Pipe Size | 2-1/2 inches |
| Compatible Pipe Schedule | Schedule 7–40 Steel Pipe |
| Detection Type | Vane-Type Mechanical |
| Activation Flow Rate | 4–10 GPM |
| Pressure Rating | 450 PSI |
| Contact Configuration | Two SPDT (Form C) |
| Contact Rating | 10 A @ 125/250 VAC |
| Enclosure Rating | NEMA 4 |
| Operating Temperature | 32°F to 150°F (0°C to 66°C) |
| Conduit Openings | Two 1/2″ Conduit Entrances |
| Weight | 2.6 lbs |
Information About WFD25N
The WFD25N is a mechanical vane-type waterflow detector developed for installation on Schedule 7 through 40 steel pipe. It operates by inserting a vane into the pipe, which activates internal switch contacts when water flow reaches a specified threshold. The device includes a pneumatic retard mechanism adjustable from 0 to 90 seconds to reduce nuisance alarms caused by transient pressure changes. Designed for fire protection systems, it is UL Listed and FM Approved for use in wet-pipe sprinkler applications.
Key Features:
-
2-1/2″ Pipe Compatibility: Designed for Schedule 7–40 steel pipe installations.
-
Vane-Type Detection: Mechanical vane senses water flow within the pipe.
-
Adjustable Pneumatic Delay: 0–90 second retard mechanism reduces false alarms.
-
Dual SPDT Contacts: Two Form C contacts rated 10 A at 125/250 VAC.
-
NEMA 4 Enclosure: Weather-resistant housing for indoor and outdoor use.
-
450 PSI Pressure Rating: Suitable for high-demand fire protection systems.
-
Flexible Mounting: Supports horizontal or vertical pipe installation.
-
UL and FM Approved: Certified for fire sprinkler system applications.
The WFD25N delivers the reliability and precision required for fire sprinkler water flow detection and alarm system integration.
Description
The System Sensor WFD25N is a vane-type water flow switch designed for 2-1/2 inch steel pipe in wet fire sprinkler systems. It detects water movement within the piping network and provides electrical signaling for fire alarm activation. The unit features a NEMA 4 enclosure for indoor and outdoor installations and supports pressure ratings up to 450 PSI.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | System Sensor |
| Category | Fire Safety |
| Part Number | WFD25N |
| Subcategory | Water Flow Switch |
| Pipe Size | 2-1/2 inches |
| Compatible Pipe Schedule | Schedule 7–40 Steel Pipe |
| Detection Type | Vane-Type Mechanical |
| Activation Flow Rate | 4–10 GPM |
| Pressure Rating | 450 PSI |
| Contact Configuration | Two SPDT (Form C) |
| Contact Rating | 10 A @ 125/250 VAC |
| Enclosure Rating | NEMA 4 |
| Operating Temperature | 32°F to 150°F (0°C to 66°C) |
| Conduit Openings | Two 1/2″ Conduit Entrances |
| Weight | 2.6 lbs |
Information About WFD25N
The WFD25N is a mechanical vane-type waterflow detector developed for installation on Schedule 7 through 40 steel pipe. It operates by inserting a vane into the pipe, which activates internal switch contacts when water flow reaches a specified threshold. The device includes a pneumatic retard mechanism adjustable from 0 to 90 seconds to reduce nuisance alarms caused by transient pressure changes. Designed for fire protection systems, it is UL Listed and FM Approved for use in wet-pipe sprinkler applications.
Key Features:
-
2-1/2″ Pipe Compatibility: Designed for Schedule 7–40 steel pipe installations.
-
Vane-Type Detection: Mechanical vane senses water flow within the pipe.
-
Adjustable Pneumatic Delay: 0–90 second retard mechanism reduces false alarms.
-
Dual SPDT Contacts: Two Form C contacts rated 10 A at 125/250 VAC.
-
NEMA 4 Enclosure: Weather-resistant housing for indoor and outdoor use.
-
450 PSI Pressure Rating: Suitable for high-demand fire protection systems.
-
Flexible Mounting: Supports horizontal or vertical pipe installation.
-
UL and FM Approved: Certified for fire sprinkler system applications.
The WFD25N delivers the reliability and precision required for fire sprinkler water flow detection and alarm system integration.