Potter WFSR-F Pressure Activated Waterflow Alarm Switch with Retard
Special Order: typically 2–6 weeks
Ships directly from the manufacturer. This is an estimated lead time, not a guaranteed delivery date.
Availability can change and lead times may be longer. If your project has a deadline, check with us before ordering.
A member of our team will check with the manufacturer and personally reply by email.
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Key Features
- Minimizes false alarms with an adjustable 0–90 second pneumatic retard for stable, reliable sprinkler monitoring
- Fast integration into wet-pipe systems via 1/2" male NPT pressure connection and standard 1/2" conduit knockouts
- Heavy-duty die-cast aluminum housing and NEMA 4 rating protect electronics for long service life in demanding environments
- Dual SPDT (Form C) contacts (15A @ 125/250VAC) support direct connection to fire panels, security monitoring, and building management systems
- Field-replaceable retard and easy-read adjustment knob simplify commissioning and on-site maintenance
Quick Specifications
- Product Model
- WFSR-F
- Brand Name
- Potter Electric Signal, LLC
- Product Name
- Pressure Activated Waterflow Alarm Switch with Retard
- Product Type
- Waterflow Switch
Frequently Bought Together
Potter WFSR-F Pressure Activated Waterflow Alarm Switch with Retard
$708.26
8 items selected
Total: $2,247.44
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Product information
WFSR-F
Overview
Ensure dependable detection of sprinkler flow events while reducing nuisance trips with the Potter Electric Signal WFSR-F pressure-activated waterflow alarm switch with retard. Designed for wet sprinkler alarm check valve connections, the WFSR-F delivers consistent monitoring performance for fire protection, security and building systems. The unit ships factory-adjusted to operate between 5 and 8 PSI (0.35–0.55 BAR) and features a field-replaceable, adjustable 0–90 second pneumatic time delay to prevent false alarms from transient pressure fluctuations.
Built for contractors and facility managers, the WFSR-F combines a robust die-cast aluminum enclosure with NEMA 4 protection and 1/2" male NPT pressure connection for easy installation. Two SPDT (Form C) contacts rated at 15A @ 125/250VAC provide reliable interface to fire alarm control panels, security monitoring platforms and BMS integrations. Assembled in the USA, this waterflow switch supports accurate, low-maintenance sprinkler surveillance and fire protection workflows. Add the Potter WFSR-F to your next installation to improve alarm reliability and simplify system commissioning — contact us to specify or order.
Features
- Minimizes false alarms with an adjustable 0–90 second pneumatic retard for stable, reliable sprinkler monitoring
- Fast integration into wet-pipe systems via 1/2" male NPT pressure connection and standard 1/2" conduit knockouts
- Heavy-duty die-cast aluminum housing and NEMA 4 rating protect electronics for long service life in demanding environments
- Dual SPDT (Form C) contacts (15A @ 125/250VAC) support direct connection to fire panels, security monitoring, and building management systems
- Field-replaceable retard and easy-read adjustment knob simplify commissioning and on-site maintenance
| General Information | |
|---|---|
| Brand Name | Potter Electric Signal, LLC |
| Manufacturer | Potter Electric Signal, LLC |
| Product Name | Pressure Activated Waterflow Alarm Switch with Retard |
| Product Type | Waterflow Switch |
| Product Model | WFSR-F |
| Country of Origin | US |
| Manufacturer Part Number | WFSR-F |
| Physical Characteristics | |
| Color | Red |
| Depth | 5.90" |
| Width | 3.50" |
| Height | 5.60" |
| Material | Die-cast Aluminum |
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Is this right for your project?
Confirm the model, required accessories and delivery needs before ordering.
- SKU:
- WFSR-F
- Manufacturer part:
- WFSR-F
How do I confirm compatibility?
Check the specifications and manufacturer documents for your existing system. Send us your model numbers and project requirements if you need help selecting equipment or accessories.
Ask a product specialistWhen will this item ship?
Availability is shown above. Special-order items and project quantities may need additional lead time. Contact us to confirm a delivery date before scheduling installation.
Shipping, freight and delivery detailsWhat should I know about returns?
Returns require an approved RMA. Consult the linked return policy for deadlines and eligibility. For standard non-defective returns, eligible factory-sealed items carry a 15% restocking fee and customer-paid return shipping; open-box and used items are refused. Defective and DOA claims follow the policy's separate terms. Special orders and other exclusions are final sale.
Read return eligibility and exclusionsPotter WFSR-F Pressure Activated Waterflow Alarm Switch with Retard
WFSR-F