Automatic Fire Sprinkler Switches

Alarm and Supervisory Switches allow sprinkler and other fire protection systems to be interfaced with hydraulic or electronic alarm systems so that upon activation of the system, an electrical or mechanical signal activates an audible or visible alarm or computerized notification device.

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Description

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Alarm and Supervisory Switches allow sprinkler and other fire protection systems to be interfaced with hydraulic or electronic alarm systems so that upon activation of the system, an electrical or mechanical signal activates an audible or visible alarm or computerized notification device.

Waterflow Alarm Switch

  • Flow & Pressure Switches – Vane type waterflow switch for use on wet sprinkler systems
  • Pressure Alarm Switch – Designed to detect a pressure increase or decrease in fire sprinkler systems, primarily used to monitor low air pressure conditions in dry systems
  • Ball Valve with Supervisory Switch – Utilizes a ball valve in combination with a switch assembly
  • Tamper & Alarm Switch – Weather proof and tamper resistant switch for monitoring the open position of post indicator, butterfly and other types of fire sprinkler/control valves
  • OSY Tamper & Alarm Switch – Used to monitor the open position of an OS&Y (outside screw and yoke) type gate valve. Mounts conveniently to most OS&Y valves ranging in size from 2″ (DN50) to 12″ (DN300). Can be used on some valves as small as 1⁄2″. Circulates single sprinkler flow and allows testing of flow switch without external discharge of water – replaces traditional Inspector’s test procedure

Flow Switches

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Potter VSR – Waterflow Alarm SwitchPotter VSR Series – Vane Type Waterflow Alarm Switch with Retard
The Model VSR is a vane type waterflow switch for use on wet sprinkler systems. It is UL Listed and FM Approved for use on steel pipe; schedules 10 through 40, sizes 2″ thru 8″ (50 mm thru 200 mm) and schedule 5, sizes 2″ thru 6″. LPC approved sizes are 2″ thru 8″ (50 mm thru 200 mm).
The VSR may also be used as a sectional waterflow detector on large systems. The VSR contains two single pole, double throw, snap action switches and an adjustable, instantly recycling pneumatic retard. The switches are actuated when a flow of 10 GPM (38 LPM) or more occurs downstream of the device. The flow condition must exist for a period of time necessary to overcome the selected retard period.

Potter VSR – Waterflow Alarm Switch

  • NEMA 4 solid metal enclosure
  • Factory installed neoprene gasket
  • 0-90 second field replaceable pneumatic retard
  • 450 psi system pressure rated
  • Schedule 5-40 pipe
  • Synchronized switch action
  • 5-year warranty
  • Listings: UL, cUL, FM, LPCB, CSFM, NYMEA, and CE
    VSR-EU has a 30 second retard and is VdS, EN 12259-5 and LPCB approved

Potter VSR-S - Waterflow Alarm Switch Small PipePotter VSR-S – Waterflow Alarm Switch Small Pipe

  • NEMA 4 solid metal enclosure
  • Factory installed neoprene gasket
  • 0-90 second field replaceable pneumatic retard
  • 300 psi system pressure rated
  • Two 1/2” KOs for dual voltage applications
  • 1” threaded brass bushing fits pipe sizes 1”-2”
  • Ideal for both commercial and residential applications.
  • 5-year warranty
  • Listings: UL, cUL, CSFM, and NYMEA
    VSR-S EU is EN 12259-5 and LPCB approved

Potter VSR-AT - Waterflow Alarm Switch with Auto TestPotter VSR-AT – Waterflow Alarm Switch with Auto Test Feature

  • Performs functional test without discharging water
  • Conserves water
  • Eliminates environmental concerns from sprinkler system discharge
  • Reduces corrosion
  • Test is initiated by ATC Key switch or any addressable fire panel
  • Operates on 24 vdc power from fire panel
  • Listings: UL, cUL, FM
    Auto Test Control Plate
  • Initiates Auto Test feature in VSR-AT
  • Momentary push button test switch
  • Key switch to enable/disable the push button
  • LED indicator

Potter VSR-SG-ST - Waterflow Alarm Switch With UnionPotter VSR-SG/ST – Waterflow Alarm Switch With Union

  • NEMA 4 solid metal enclosure
  • Factory installed neoprene gasket
  • 0-90 second field replaceable pneumatic retard
  • 175 psi system pressure rated
  • 1” male CPVC fitting or 1” NPT bushing
  • Fits CPVC pipe sizes 1”, 1 ¼”, 1 ½”, and 2”
  • Special fitting allows for installation in confined spaces
  • 5-year warranty
  • Listings: UL, cUL, CSFM, NYMEA, and CE

Potter VSR-C - Waterflow Alarm Switch For Copper PipePotter VSR-C – Waterflow Alarm Switch For Copper Pipe

  • NEMA 4 solid metal enclosure
  • Factory installed neoprene gasket
  • 0-90 second pneumatic retard
  • 175 psi system pressure rated
  • Non-corrosive saddle bushing
  • Two 1/2” KOs for dual voltage applications
  • Pipe Sizes: 2”, 2 ½”, 3”, 4” for type K, L, and M copper pipe
  • 5-year warranty
  • Listings: UL, CSFM, and NYBSA

Potter VSR-FE-2 - Waterflow Alarm Switch With Electronic RetardPotter VSR-FE-2 – Waterflow Alarm Switch With Electronic Retard

  • NEMA 4 solid metal enclosure
  • Factory installed neoprene gasket
  • 0-90 second electronic retard
  • 450 psi system pressure rated
  • Non-corrosive saddle bushing
  • Two ½” KOs for dual voltage applications
  • Pipe schedules 10-40 Sizes 2”-8”
  • 5-year warranty
  • Listings: UL, ULC and FM

Potter VS-SP - Special Application Waterflow Switch Without RetardPotter VS-SP – Special Application Waterflow Switch Without Retard

  • NEMA 4 solid metal enclosure
  • Factory installed neoprene gasket
  • 250 psi system pressure rated
  • One SPDT (Form C) contact second set of contacts optional
  • 1” solid brass threaded bushing
  • Twelve paddles provided for use on plastic, copper, and schedule 40
  • 5-year warranty
  • Listings: UL, cUL, CSFM, NYBSA, and CE

Potter VSG - Waterflow Alarm Switch For Low FlowPotter VSG – Waterflow Alarm Switch For Low Flow

  • NEMA 4 solid metal enclosure
  • Factory installed neoprene gasket
  • 0-90 second electronic retard
  • 450 psi system pressure rated
  • Non-corrosive saddle bushing
  • Two 1/2” KOs for dual voltage applications
  • Pipe Sizes 2”, 2 ½”, 3”, 4”
  • Operates at 4 GPM, specially designed for water mist systems
  • 5-year warranty
  • Listings: UL and CSFM

Potter WFSR-F - Pressure Activated Waterflow Alarm Switch With RetardPotter WFSR-F – Pressure Activated Waterflow Alarm Switch With Retard

  • NEMA 4 solid metal enclosure
  • For wet systems utilizing alarm check valves
  • Factory installed neoprene gasket
  • 0-90 second pneumatic retard
  • 175 psi system pressure rated
  • ½” male NPT fitting
  • Eliminates the need for retard chambers
  • Two ½” KOs for dual voltage applications
  • 5-year warranty
  • Listings: UL, cUL, CSFM, FM, NYMEA, and CE

System Sensor WFD Series Water Flow DetectorsSystem Sensor WFD Series Water Flow Detectors
The WFD Series water flow detectors are available in a range of sizes to accommodate fire sprinkler risers from two to eight inches. All units feature vane-type paddles and an adjustable mechanical relay.
Pressure Rating 450 PSI, Contact Ratings 2 Form C: 10 A, 1/2 HP @ 125/250 VAC; 2.5 A @ 6/12/24 VDC, Triggering Threshold 4–10 GPM

  • WFD20 – Pipe Size 2 in. Hole Size 1¼ in.
  • WFD25 – Pipe Size 2½ in. Hole Size 1¼ in.
  • WFD30-2 – Pipe Size 3 in. Hole Size 2 in.
  • WFD40 – Pipe Size 4 in. Hole Size 2 in.
  • WFD50 – Pipe Size 5 in. Hole Size 2 in.
  • WFD60 – Pipe Size 6 in. Hole Size 2 in.
  • WFD80 – Pipe Size 8 in. Hole Size 2 in.

Pressure Switches

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Potter PS Series
Pressure Type Waterflow Alarm/Supervisory Switch

  • NEMA 4 solid metal enclosure
  • Factory installed neoprene gasket
  • Pressure range: 4-15 psi (PS10), 5-30 psi (PS15), 10-60 psi (PS40), 25-175 psi (PS120)
  • 300 psi system pressure rated
  • ½” male NPT fitting
  • Two ½” knockouts for dual voltage applications
  • Separate isolated wiring chambers eliminate NEC questions regarding multi-voltage applications
  • Factory set for operation at:
    • PS10 Pressure Increase at 6 psi, Pressure Decrease at 5 psi
    • PS15-2 Pressure decrease at 10 psi, Pressure increase at 20 psi
    • PS40-1 Pressure Decrease at 30 psi
    • PS40-2 Pressure Increase at 50 psi, Pressure Decrease at 30 psi
    • PS120-1 Pressure Decrease at 110 psi
    • PS120-2 Pressure Increase at 130 psi, Pressure Decrease at 110 psi
  • 5-year warranty
  • Listings: UL, cUL, CSFM, FM, LPC, NYMEA, and CE
    ‘VdS’ is listed with UL, FM, VdS, CUL, LPCB, and CSFM

Potter PS-TM Series - Preassembled Test ModulePotter PS-TM Series – Completely Pre-Assembled Low Pressure Test Module

  • For use on dry pipe and pre-action systems
  • Available with PS40-2 or PS15-2 for low pressure systems
  • Includes pressure switch, BVL bleeder valve, and easy to read, high quality, pressure gauge pre-assembled with galvanized pipe
  • Meets the requirement of NFPA 72, 2016, 17.16.2 and NFPA 25, 2014, 13.4.4.2.6
  • Eliminates accidental tripping of the dry pipe valve during testing
  • Saves time and money on inspections and testing
  • Recommended for Nitrogen Systems to conserve Nitrogen and reduce wear on generators

Potter PS15 - Low-High Supervisory Pressure Switch for Low Differential Dry ValvesPotter PS15 – Pressure Supervisory Switch for Low Pressure Systems

  • NEMA 4 solid metal enclosure
  • Factory installed neoprene gasket
  • 300 psi system pressure rated
  • Pressure range 5-30 psi
  • ½” male NPT fitting
  • Two ½” knockouts for dual voltage applications
  • Separate isolated wiring chambers eliminate NEC questions regarding multi-voltage applications
  • Factory set for operation at 20 psi on pressure increase and 10 psi on pressure decrease
  • 5-year warranty
  • Listings: UL, ULC, CSFM, FM, LPC, NYMEA, and CE
  • Typically used on excess pressure systems

Potter BVL - Lever Type Bleeder ValvePotter BVL – Lever Type Bleeder Valve

  • For use as a test valve for supervisory pressure switches on dry pipe and preaction sprinkler systems
  • Should be installed in-line with pressure switch and gauge
  • Convenient means for removal or testing the pressure actuated device without affecting the pressure in the system
  • ½” NPT connections
  • Recommended for Nitrogen Systems to conserve Nitrogen and reduce wear on generators

Potter PCS-ADPS - Pump Control Switch-Adjustable Deadband Pressure SwitchPotter PCS/ADPS
Pump Control Switch/Adjustable Deadband Pressure Switch

  • Independent set and reset points
  • Adjustable operating range 25-300 PSIG
  • 12 PSI minimum deadband
  • NEMA 4X enclosure for indoor or outdoor use
  • Horsepower rating: PCS: 1/2HP, ADPS: 1/8 HP
  • Listings: UL, CE, and CSA

System Sensor EPS Series Pressure SwitchesSystem Sensor EPS Series Pressure Switches
The EPS Series pressure switches are offered in three varieties and with one or two SPDT contacts. The EPS10 alarm pressure switches are ideal for dry pipe systems, while the EPS40 and EPS120 supervisory pressure switches are intended for supervising air pressure in pipes or pressure tanks.

  • EPS10-1 – 4 to 20 psi maximum adjustment range
  • EPS10-2 – 4 to 20 psi maximum adjustment range
  • EPS40-1 – 10 to 100 psi maximum adjustment range
  • EPS40-2 – 10 to 100 psi maximum adjustment range
  • EPS120-1 – 10 to 200 psi maximum adjustment range
  • EPS120-2 – 10 to 200 psi maximum adjustment range

Tamper Switches

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System Sensor Supervisory SwitchesSystem Sensor Supervisory Switches
System Sensor manufactures devices for supervising a variety of control valves, including outside screw and yoke, post indicator, butterfly, and rising and non-rising stem gate.

  • OSY2 – Used to monitor the open position of an outside screw-and-yoke type gate valve
  • PIBV2 – Used to monitor the open position of post indicator and butterfly control valves
  • PSP1 – A plug-in special application supervisory switch designed for applications where no other type of listed valve supervisory switch can be used.

Potter OSYSU - Outside Screw & Yoke Valve Supervisory SwitchPotter OSYSU-1 & 2
Outside Screw & Yoke Valve Supervisory Switch

  • NEMA 6P (Submersible)
  • Factory installed neoprene gasket
  • OSYSU-1: One set of SPDT (Form C)
  • OSYSU-2: Two sets of SPDT (Form C)
  • Fits 1/2”-12” valves
  • Fully adjustable stainless steel trip rod cuts installation time by 75%
  • Mounting nuts with captive washers reduces installation time
  • Installs on OS&Y valves in any position
  • 5-year warranty
  • Listings: UL, cUL CSFM, FM, NYMEA, and CE

Potter PCVS-2 - Control Valve Supervisory SwitchPotter PCVS-2 – Control Valve Supervisory Switch

  • NEMA 6P (Submersible)
  • Factory installed neoprene gasket
  • PCVS-2: Two sets of SPDT (Form C)
  • 1/2” male NPT fitting
  • Fully adjustable stainless steel trip rod
  • Installs on wall and post indicator valves, butterfly valves in any position
  • 5-year warranty
  • Listings: UL, cUL, CSFM, FM, NYMEA, and CE

Potter OSYSU-2 CRH – Outside Screw & Yoke Valve Supervisory Switch with Corrosion Resistant Hardware

The OSYSU-CRH provides additional corrosion protection on top of the NEMA 4X enclosure with corrosion resistant mounting hardware.

 

Potter PCVS-2 CRH – Control Valve Supervisory Switch with Corrosion Resistant Hardware
The PCVS-CRH provides additional corrosion protection on top of the NEMA 4X enclosure with corrosion resistant mounting hardware.

 

Potter PTS-C - Plug Type Supervisory SwitchPotter PTS-C – Plug Type Supervisory Switch

  • NEMA 6P submersible
  • Factory installed neoprene gasket
  • SPDT contacts 100mA at 28 VDC/AC, 250mA at 12 VDC/AC
  • SPDT cover tamper 250mA at 28 VDC/AC
  • Dimensions 7”L x 3.75”W x 3”D (including bracket)
  • Temperature rating -40°F to 140°F
  • 5-year warranty
  • Listings: UL, cUL, FM, NYMEA, and CSFM
  • For non-rising stem valves and other special applications

 

Potter WLS - Tank Water LevelPotter WLS – Tank Water Level

  • NEMA 4 solid metal enclosure
  • Detection range before 3” rise/ before 3” fall of water level
  • Detection of 12” drop in water level
  • Maximum pressure 175 psi
  • Used on steel or wooden tanks
  • Works on pressure or gravity tanks
  • Listings: UL, NYMEA, and CSFM

 

Potter RTS-O-C - Room Temperature SwitchPotter RTS-O/C – Room Temperature Switch

  • Designed to warn of potential sprinkler pipe freezing or other cold detection applications
  • White ABS enclosure
  • Epoxy sealed stainless steel case, bimetallic operating mechanism sensor
  • Silver clad contacts
  • RTS-O: Normally Open
  • RTS-C: Normally Closed
  • Temperature setting: 40°F ±5°F, 5°C ±3°C
  • UL and cUL listed for fire sprinkler supervisory service

 

Potter RBVS - Retrofit Ball Valve SwitchPotter RBVS – Retrofit Ball Valve Switch

  • Monitors alarm line ball valves
  • Perfect for backflow preventers 1” – 2”
  • Mounts on standard & “T” style valves
  • NEMA 4 rated enclosure for indoor and outdoor use
  • Fits virtually any 1/2” – 2” ball valve
  • Optional cover tamper switch
  • US Patent 6,945,509
  • Meets NFPA requirements 13, 2010, 18.17.1 and IBC/IFC 2009, 903.4
  • Listings: UL, cUL, NYMEA, and FM Approved

 

Potter TTS - Tank Temperature SwitchPotter TTS – Tank Temperature Switch

  • NEMA 4 enclosure
  • Operates at 40°F and 140°F
  • Available for steel or wood tanks
  • Listings: UL, FM, CSFM, and MEA