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.
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
Potter 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 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 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 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 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 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 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 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 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 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
Potter PS Series
Pressure Type Waterflow Alarm/Supervisory Switch
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 – 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 – 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 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 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 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
System 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.
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 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 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 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 Switch
Designed to warn of potential sprinkler pipe freezing or other cold detection applications
Potter VSR Series – Vane Type Waterflow Alarm Switch with Retard
Potter VSR-S – Waterflow Alarm Switch Small Pipe
Potter VSR-AT – Waterflow Alarm Switch with Auto Test Feature
Potter VSR-SG/ST – Waterflow Alarm Switch With Union
Potter VSR-C – Waterflow Alarm Switch For Copper Pipe
Potter VSR-FE-2 – Waterflow Alarm Switch With Electronic Retard
Potter VS-SP – Special Application Waterflow Switch Without Retard
Potter VSG – Waterflow Alarm Switch For Low Flow
Potter WFSR-F – Pressure Activated Waterflow Alarm Switch With Retard
System Sensor WFD Series Water Flow Detectors
Potter PS-TM Series – Completely Pre-Assembled Low Pressure Test Module
Potter PS15 – Pressure Supervisory Switch for Low Pressure Systems
Potter BVL – Lever Type Bleeder Valve
Potter PCS/ADPS
System Sensor EPS Series Pressure Switches
System Sensor Supervisory Switches
Potter OSYSU-1 & 2
Potter PCVS-2 – Control Valve Supervisory Switch
Potter PTS-C – Plug Type Supervisory Switch
Potter WLS – Tank Water Level
Potter RTS-O/C – Room Temperature Switch
Potter RBVS – Retrofit Ball Valve Switch
Potter TTS – Tank Temperature Switch
