{"id":364,"date":"2026-06-14T11:28:43","date_gmt":"2026-06-14T11:28:43","guid":{"rendered":"https:\/\/redfire.co.in\/?post_type=product&p=364"},"modified":"2026-07-01T02:58:14","modified_gmt":"2026-07-01T02:58:14","slug":"flow-switch","status":"publish","type":"product","link":"https:\/\/redfire.co.in\/?product=flow-switch","title":{"rendered":"Flow Switch"},"content":{"rendered":"
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Honeywell Flow Switch<\/span><\/h1>\n
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Overview<\/span><\/h2>\n

The\u00a0<\/span>Honeywell Flow Switch<\/span><\/strong>\u00a0is a precision-engineered monitoring device designed for reliable flow detection in liquid, air, and gas systems across commercial, industrial, and fire protection applications. Manufactured by\u00a0<\/span>Honeywell<\/span><\/strong>\u00a0\u2014 a Fortune 100 global leader in building technologies and fire safety \u2014 this flow switch delivers accurate, dependable performance for operational control, interlocking protection, and system safety.<\/span><\/p>\n

A flow switch is a sensing device that monitors the flow rate of a fluid or gas within a pipe or duct. When the flow rate reaches above or below a predefined set point, the switch activates a single-pole double-throw (SPDT) output, closing one circuit and opening another. This capability makes it an essential component for pump protection, cooling system monitoring, air handling unit control, and\u00a0<\/span>fire sprinkler systems<\/span><\/strong>\u00a0, where it plays a critical role in detecting water flow to sprinkler heads\u00a0<\/span>.<\/span><\/p>\n

Honeywell offers a comprehensive range of flow switches to suit diverse requirements \u2014 from paddle-type water flow detectors and electronic liquid\/gas flow monitors to air flow switches for HVAC ducts and low-flow shuttle-type switches for central heating systems.<\/span><\/p>\n

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Available Models<\/span><\/h2>\n
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Model<\/span><\/th>\nDescription<\/span><\/th>\n<\/tr>\n<\/thead>\n
WFS Series (WFS6000 \/ WFS8000)<\/span><\/strong><\/td>\nPaddle-type SPDT liquid flow switch for water and compatible fluids; designed for operational control, interlocking, and close-off protection; widely used in fire fighting and HVAC applications\u00a0<\/span><\/td>\n<\/tr>\n
WFDNF Series<\/span><\/strong><\/td>\nRugged water flow detector for fire sprinkler systems; NEMA 4 rated; two sets of SPDT synchronized switches; adjustable mechanical time delay (30-60 seconds) to prevent false alarms; UL listed with tamper-resistant cover\u00a0<\/span><\/td>\n<\/tr>\n
KSW Series<\/span><\/strong><\/td>\nCompact electronic flow monitor for liquids and piped gases; no moving parts; precise sensitivity adjustment via rough\/fine potentiometer; yellow LED status indication; suitable for cooling\/heating circuits with up to 35% glycol; prevents dry pump running\u00a0<\/span><\/td>\n<\/tr>\n
S6065 Series<\/span><\/strong><\/td>\nLiquid flow monitor for coolants in air-conditioning and refrigeration systems; fully encapsulated microswitch; available in V4A version for aggressive liquids; low-cost solution\u00a0<\/span><\/td>\n<\/tr>\n
S6040 Series (FEMA Air Flow Switch)<\/span><\/strong><\/td>\nAir flow monitor for ducts of air-conditioning and air-purification systems; SPDT configuration; adjustable set point for air velocities from 2.5 to 9.2 m\/s\u00a0<\/span><\/td>\n<\/tr>\n
FRN Series<\/span><\/strong><\/td>\nLow-flow shuttle-type switch for very low flow rates (1.0 \u00b1 0.5 L\/min); minimal pressure drop; available in Noryl\u2122 thermoplastic and dezincificated brass housings; suitable for central heating, shower control, and mains water applications\u00a0<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
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Key Features<\/span><\/h2>\n
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Feature<\/span><\/th>\nDescription<\/span><\/th>\n<\/tr>\n<\/thead>\n
SPDT Output<\/span><\/strong><\/td>\nSingle-pole double-throw switch provides contact closure for alarms, interlocks, and control systems\u00a0<\/span><\/td>\n<\/tr>\n
Adjustable Set Point<\/span><\/strong><\/td>\nField-adjustable flow rate thresholds to suit specific system requirements\u00a0<\/span><\/td>\n<\/tr>\n
Mechanical Time Delay<\/span><\/strong><\/td>\nAdjustable delay (up to 90 seconds) minimizes false alarms due to pressure surges or air trapped in fire sprinkler systems\u00a0<\/span><\/td>\n<\/tr>\n
Multiple Media Compatibility<\/span><\/strong><\/td>\nSuitable for water, non-corrosive liquids, coolants (up to 35% glycol), air, non-aggressive gases, and aggressive liquids (with suitable material selection)\u00a0<\/span><\/td>\n<\/tr>\n
Durable Construction<\/span><\/strong><\/td>\nAvailable in brass, stainless steel, Noryl\u2122 thermoplastic, and robust NEMA 4 rated enclosures for indoor\/outdoor use\u00a0<\/span><\/td>\n<\/tr>\n
Easy Installation<\/span><\/strong><\/td>\nCompact design with various connection options including threaded, compression fittings, and duct mounting\u00a0<\/span><\/td>\n<\/tr>\n
Visual Status Indication<\/span><\/strong><\/td>\nLED indicators for switching state and flow direction marking for easy inspection\u00a0<\/span><\/td>\n<\/tr>\n
UL Listed Options<\/span><\/strong><\/td>\nUL-listed models available for fire protection applications; tamper-resistant cover prevents unauthorized entry\u00a0<\/span><\/td>\n<\/tr>\n
Fire Sprinkler Monitoring<\/span><\/strong><\/td>\nDesigned for primary signaling in fire protection systems; switch synchronization activates both alarm panel and local bell\/horn strobe\u00a0<\/span><\/td>\n<\/tr>\n
No Moving Parts (Electronic Models)<\/span><\/strong><\/td>\nKSW series offers maintenance-free operation with no mechanical parts to wear\u00a0<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
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Technical Specifications<\/span><\/h2>\n
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Parameter<\/span><\/th>\nSpecification<\/span><\/th>\n<\/tr>\n<\/thead>\n
Brand<\/span><\/strong><\/td>\nHoneywell<\/span><\/td>\n<\/tr>\n
Switch Configuration<\/span><\/strong><\/td>\nSPDT (Single Pole Double Throw) \/ Form C<\/span><\/td>\n<\/tr>\n
Contact Rating<\/span><\/strong><\/td>\nUp to 15A @ 250V AC (model dependent)\u00a0<\/span><\/td>\n<\/tr>\n
Operating Pressure<\/span><\/strong><\/td>\nUp to 10 kg\/cm\u00b2 (1000 kPa)\u00a0<\/span><\/td>\n<\/tr>\n
Operating Temperature<\/span><\/strong><\/td>\n-40\u00b0C to +100\u00b0C (model dependent)\u00a0<\/span><\/td>\n<\/tr>\n
Flow Media<\/span><\/strong><\/td>\nWater, liquids, coolants, air, non-aggressive gases\u00a0<\/span><\/td>\n<\/tr>\n
Mounting<\/span><\/strong><\/td>\nIn-line pipe, duct, vertical orientation\u00a0<\/span><\/td>\n<\/tr>\n
Enclosure Rating<\/span><\/strong><\/td>\nNEMA 4 \/ IP54 (WFDNF models)\u00a0<\/span><\/td>\n<\/tr>\n
Certifications<\/span><\/strong><\/td>\nUL Listed, PESO Approved (select models), Material Water Research Council approved\u00a0<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
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Why Choose Honeywell Flow Switch?<\/span><\/h2>\n
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    Trusted Global Brand<\/span><\/strong>\u00a0\u2014 Honeywell is a Fortune 100 company with decades of expertise in building technologies, fire safety, and industrial sensing<\/span><\/p>\n<\/li>\n

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    Comprehensive Range<\/span><\/strong>\u00a0\u2014 Wide selection of flow switches for liquid, air, and gas applications across HVAC, fire protection, and industrial sectors<\/span><\/p>\n<\/li>\n

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    Proven Fire Protection Solutions<\/span><\/strong>\u00a0\u2014 Honeywell flow switches are industry-standard components for fire sprinkler monitoring, trusted by engineers and fire safety professionals worldwide<\/span><\/p>\n<\/li>\n

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    Reliability & Accuracy<\/span><\/strong>\u00a0\u2014 Precision-engineered for repeatable, dependable performance in critical applications\u00a0<\/span><\/p>\n<\/li>\n

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    Easy Integration<\/span><\/strong>\u00a0\u2014 Compatible with building management systems, fire alarm control panels, and industrial automation platforms\u00a0<\/span><\/p>\n<\/li>\n

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    Minimised False Alarms<\/span><\/strong>\u00a0\u2014 Adjustable time delay and stable detection mechanisms reduce nuisance alarms in fire sprinkler systems\u00a0<\/span><\/p>\n<\/li>\n

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    Durable & Long-Lasting<\/span><\/strong>\u00a0\u2014 Rugged construction with corrosion-resistant materials ensures long service life in demanding environments\u00a0<\/span><\/p>\n<\/li>\n<\/ul>\n

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    Ideal Applications<\/span><\/h2>\n
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      Fire Sprinkler Systems<\/span><\/strong>\u00a0\u2014 Water flow detection for primary signaling and alarm activation\u00a0<\/span><\/p>\n<\/li>\n

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      HVAC Systems<\/span><\/strong>\u00a0\u2014 Air flow monitoring in ducts; cooling and heating circuit monitoring\u00a0<\/span><\/p>\n<\/li>\n

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      Pump Protection<\/span><\/strong>\u00a0\u2014 Preventing dry running by detecting loss of flow\u00a0<\/span><\/p>\n<\/li>\n

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      Industrial Process Lines<\/span><\/strong>\u00a0\u2014 Monitoring flow in water, chemical, and utility pipelines\u00a0<\/span><\/p>\n<\/li>\n

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      Refrigeration Systems<\/span><\/strong>\u00a0\u2014 Coolant flow monitoring in air-conditioning and refrigeration\u00a0<\/span><\/p>\n<\/li>\n

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      Central Heating<\/span><\/strong>\u00a0\u2014 Low-flow detection in domestic and commercial heating systems\u00a0<\/span><\/p>\n<\/li>\n

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      Water Distribution<\/span><\/strong>\u00a0\u2014 Mains water monitoring and control\u00a0<\/span><\/p>\n<\/li>\n

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      Commercial Buildings<\/span><\/strong>\u00a0\u2014 Office complexes, hospitals, hotels, and government facilities\u00a0<\/span><\/p>\n<\/li>\n<\/ul>\n

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      Compliance & Standards<\/span><\/h2>\n
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      Standard<\/span><\/th>\nDescription<\/span><\/th>\n<\/tr>\n<\/thead>\n
      UL Listed<\/span><\/strong><\/td>\nUnderwriters Laboratories certification for fire protection equipment\u00a0<\/span><\/td>\n<\/tr>\n
      NEMA 4 \/ IP54<\/span><\/strong><\/td>\nEnclosure rating for indoor\/outdoor use\u00a0<\/span><\/td>\n<\/tr>\n
      Material Water Research Council Approved<\/span><\/strong><\/td>\nApproved for potable water applications (FRN Series)\u00a0<\/span><\/td>\n<\/tr>\n
      PESO Approved<\/span><\/strong><\/td>\nApproved for use with fire protection systems in India (select models)<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
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      For detailed product inquiries, technical specifications, bulk order pricing, or to place an order, please contact our sales team.<\/span><\/em><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

      The\u00a0<\/span>Honeywell Flow Switch<\/span><\/strong>\u00a0is a precision-engineered monitoring device designed for reliable flow detection in liquid, air, and gas systems across commercial, industrial, and fire protection applications. Manufactured by\u00a0<\/span>Honeywell<\/span><\/strong>\u00a0\u2014 a Fortune 100 global leader in building technologies and fire safety \u2014 this flow switch delivers accurate, dependable performance for operational control, interlocking protection, and system safety.<\/span><\/p>\n","protected":false},"featured_media":431,"comment_status":"open","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"product_brand":[27],"product_cat":[15],"product_tag":[],"class_list":["post-364","product","type-product","status-publish","has-post-thumbnail","product_brand-honeywell","product_cat-uncategorized","first","instock","shipping-taxable","purchasable","product-type-simple"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t