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System Sensor WFD30N 3-Inch NEMA 4 Waterflow Detector Switch for Fire Sprinkler Systems
- Regular price
- $245.00
- Sale price
- $245.00
- Regular price
-
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Product Description P/N: WFD30N
Description
The System Sensor WFD30N is a vane-type waterflow detector designed to monitor water movement in 3-inch wet-pipe fire sprinkler systems and initiate an alarm signal when sustained flow occurs. System Sensor part number WFD30N combines dual Form C switching contacts, an adjustable pneumatic retard, a 450 PSI pressure rating, and a NEMA 4 enclosure for indoor or outdoor fire protection applications.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | System Sensor |
| Category | Fire Alarm & Life Safety |
| Part Number | WFD30N |
| Subcategory | Waterflow Detectors |
| Series | WFD Series |
| Product Type | Vane-Type Waterflow Detector |
| Application | Wet-Pipe Fire Sprinkler Systems |
| Nominal Pipe Size | 3 in |
| Compatible Pipe | Steel Water Pipe, Schedule 7 through Schedule 40 |
| Flow Activation Range | 4–10 GPM |
| Static Pressure Rating | Up to 450 PSI |
| Maximum Surge Velocity | 18 ft/s |
| Switch Configuration | 2 × SPDT (Form C) |
| AC Contact Rating | 10 A, 1/2 HP at 125/250 VAC |
| DC Contact Rating | 2.5 A at 6/12/24 VDC |
| Retard Mechanism | Adjustable Pneumatic Retard |
| Operating Temperature | 32°F to 150°F (0°C to 66°C) |
| Enclosure Rating | NEMA 4 |
| Conduit Entrances | 2 × 1/2 in Openings |
| Optional Accessory | CTS Cover Tamper Switch |
| Mounting Orientation | Horizontal or Vertical Pipe, Subject to Installation Requirements |
| Weight | 3.1 lb |
Information About WFD30N
The WFD30N is part of the System Sensor WFD Series of mechanical waterflow detectors designed for installation on compatible steel sprinkler pipe. Its 3-inch configuration uses a flexible vane inserted into the pipe, allowing water movement caused by sprinkler activation to operate the detector while an adjustable retard mechanism helps prevent alarms from pressure surges and transient flow. Two SPDT Form C switches provide independent signaling contacts for connection to compatible fire alarm, notification, or monitoring equipment, and the switches can be accessed without removing the detector from the pipe. The weather-resistant NEMA 4 enclosure, tamper-resistant cover, and compatibility with Schedule 7 through Schedule 40 steel pipe make the unit suitable for commercial and industrial wet-pipe sprinkler installations.
Key Features:
- 3-Inch Pipe Configuration: Designed specifically for monitoring waterflow in compatible 3-inch steel fire sprinkler piping.
- Vane-Type Detection: A paddle extending into the sprinkler pipe responds to sustained water movement produced by system activation.
- Adjustable Retard: Pneumatic retard mechanism provides an adjustable delay to reduce unwanted alarms caused by pressure fluctuations and temporary water surges.
- Dual Form C Contacts: Two independent SPDT switches provide flexible alarm and monitoring connections.
- High-Capacity Contacts: Switch contacts are rated up to 10 A at 125/250 VAC and 2.5 A at 6/12/24 VDC.
- 450 PSI Pressure Rating: Heavy-duty construction supports sprinkler systems with static pressures up to 450 PSI.
- NEMA 4 Enclosure: Weather-resistant housing permits installation in appropriate indoor and outdoor locations.
- Broad Pipe Compatibility: Designed for steel water pipe from Schedule 7 through Schedule 40.
- Flow Activation Range: Designed to initiate within a 4–10 GPM waterflow range under specified installation conditions.
- Surge Resistance: Withstands water velocities up to 18 ft/s without damage.
- Dual Conduit Entrances: Provides two openings for 1/2-inch conduit to simplify field wiring arrangements.
- Optional Cover Tamper: Supports the optional CTS cover tamper switch for supervision of unauthorized cover removal.
The WFD30N delivers the reliability and precision required for waterflow alarm monitoring in commercial and industrial wet-pipe fire sprinkler systems.
Description
The System Sensor WFD30N is a vane-type waterflow detector designed to monitor water movement in 3-inch wet-pipe fire sprinkler systems and initiate an alarm signal when sustained flow occurs. System Sensor part number WFD30N combines dual Form C switching contacts, an adjustable pneumatic retard, a 450 PSI pressure rating, and a NEMA 4 enclosure for indoor or outdoor fire protection applications.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | System Sensor |
| Category | Fire Alarm & Life Safety |
| Part Number | WFD30N |
| Subcategory | Waterflow Detectors |
| Series | WFD Series |
| Product Type | Vane-Type Waterflow Detector |
| Application | Wet-Pipe Fire Sprinkler Systems |
| Nominal Pipe Size | 3 in |
| Compatible Pipe | Steel Water Pipe, Schedule 7 through Schedule 40 |
| Flow Activation Range | 4–10 GPM |
| Static Pressure Rating | Up to 450 PSI |
| Maximum Surge Velocity | 18 ft/s |
| Switch Configuration | 2 × SPDT (Form C) |
| AC Contact Rating | 10 A, 1/2 HP at 125/250 VAC |
| DC Contact Rating | 2.5 A at 6/12/24 VDC |
| Retard Mechanism | Adjustable Pneumatic Retard |
| Operating Temperature | 32°F to 150°F (0°C to 66°C) |
| Enclosure Rating | NEMA 4 |
| Conduit Entrances | 2 × 1/2 in Openings |
| Optional Accessory | CTS Cover Tamper Switch |
| Mounting Orientation | Horizontal or Vertical Pipe, Subject to Installation Requirements |
| Weight | 3.1 lb |
Information About WFD30N
The WFD30N is part of the System Sensor WFD Series of mechanical waterflow detectors designed for installation on compatible steel sprinkler pipe. Its 3-inch configuration uses a flexible vane inserted into the pipe, allowing water movement caused by sprinkler activation to operate the detector while an adjustable retard mechanism helps prevent alarms from pressure surges and transient flow. Two SPDT Form C switches provide independent signaling contacts for connection to compatible fire alarm, notification, or monitoring equipment, and the switches can be accessed without removing the detector from the pipe. The weather-resistant NEMA 4 enclosure, tamper-resistant cover, and compatibility with Schedule 7 through Schedule 40 steel pipe make the unit suitable for commercial and industrial wet-pipe sprinkler installations.
Key Features:
- 3-Inch Pipe Configuration: Designed specifically for monitoring waterflow in compatible 3-inch steel fire sprinkler piping.
- Vane-Type Detection: A paddle extending into the sprinkler pipe responds to sustained water movement produced by system activation.
- Adjustable Retard: Pneumatic retard mechanism provides an adjustable delay to reduce unwanted alarms caused by pressure fluctuations and temporary water surges.
- Dual Form C Contacts: Two independent SPDT switches provide flexible alarm and monitoring connections.
- High-Capacity Contacts: Switch contacts are rated up to 10 A at 125/250 VAC and 2.5 A at 6/12/24 VDC.
- 450 PSI Pressure Rating: Heavy-duty construction supports sprinkler systems with static pressures up to 450 PSI.
- NEMA 4 Enclosure: Weather-resistant housing permits installation in appropriate indoor and outdoor locations.
- Broad Pipe Compatibility: Designed for steel water pipe from Schedule 7 through Schedule 40.
- Flow Activation Range: Designed to initiate within a 4–10 GPM waterflow range under specified installation conditions.
- Surge Resistance: Withstands water velocities up to 18 ft/s without damage.
- Dual Conduit Entrances: Provides two openings for 1/2-inch conduit to simplify field wiring arrangements.
- Optional Cover Tamper: Supports the optional CTS cover tamper switch for supervision of unauthorized cover removal.
The WFD30N delivers the reliability and precision required for waterflow alarm monitoring in commercial and industrial wet-pipe fire sprinkler systems.