Flow Actuated Switches

Equipment Type Pressure Washer
Tri-Magnet Technology In-Line Flow Switch
Microswitch Technology Eliminates Reed Switch
High Pressure In-Line Flow Switch
Can Be Mounted in Any Position
PSI 5000
Gallons Per Minute 12
Temperature 180° F
Inlet 3/8" FPT
Outlet 3/8" FPT
48", 18 awg lead length
Activates With As Little As 1.5GPM Flow

Equipment Type Pressure Washer
The ST-5 is a "normally open" flow switch, designed to be mounted in a high pressure water line. Inside the housing is a floating magnet which is aligned parallel with a reed switch. When the water flow is initiated, ususally by pulling the spray gun trigger, the water flow forces the magnet to move forward. Once in the correct position, the magnet pulls the thin reeds together, closing the circuit and allowing electrical continuity. When water flow ceases, usually when the trigger is released, gravity returns the magnet to its original position. the reeds then pull apart and open the circuit, stopping electrical continuity.
Mounts further downstream in pumping system than traditional vacuum switches, therby minimizing potential leak points that can cause vacuum switches to close.
Vacuum switches use rubber diaphragms that often rupture and cause vacuum leaks to the pump
Flow switches operate at a variety of pressures
Flow switches eliminate the need to restrict water flow to the pump, thereby prolonging pump life
the reed switch is encased in a protective glass capsule with a sealed nitrogen atmosphere that eliminates exposure to corrosive cleaning chemicals
Mounting Position: Vertical only
Magnet Configuration: Free floting
PSI 75-3600 PSI
Gallons Per Minute 1-8
Inlet 3/8" FPT
Outlet 3/8" FPT
Cord/Lead Length: 47 inches
Weight 16oz
WIRING INSTRUCTIONS: Lead #1 to Line/Power, Lead #2 to Load Yellow with green tracer to Ground
Reed Switch Adjustment: depending on the system flow, it is normal for the magnet position to vary. This variance may require adjustment of the reed switch upon initial installation, especially at lower flow rates. If the switch fails to close upon initial flow, simply loosen the adjustment screw and position switch so it properly opens/closes according to flow conditions.

Equipment Type Pressure Washer
The ST-6 flow switch is a "normally open" flow switch, designed to be mounted in a high pressure water line. Inside the housing is a floating magnet which is aligned parallel with a reed switch. When the water flow is initiated, usually when the spray gun trigger is pulled, the water flow forces the magnetto move forward. Once in the correct position, the magnet pulls the thin reeds together, closing the circuit and allowing electrical continuity. When water flow ceases, usually when the trigger is released, a light spring returns the magnet to its original position. The reeds then pull apart and open the circuit, stopping electrical continuity.
Mounts further downstream in pumping system than traditional vacuum switches, thereby minimizing potential leak points that can cause vacuum leaks to the pump
Vacuum switches use rubber diaphragms that often rupture and cause vacuum leaks to the pump
Flow switches operate at a variety of pressures
Flow switches eliminate the need to restrict water flow to the pump, thereby prolonging pump life
The reed switch is encased in a protective galss capsule with a sealed nitrogen atmosphere that eliminates exposure to corrosive cleaning chemicals
Reed Switch Adjustment: depending on the system flow, it is normal for the magnet position to vary. This variance may require adjustment of the reed switch upon initial installation, especially at lower flow rates. If the switch fails to close upon initial flow, simply loosen the adjustment screw and position switch so it properly opens/closes according to flow conditions.
Magnet Configuration: Free floting
PSI 75-3600
Gallons Per Minute 1-8
Inlet 3/8" FPT
Outlet 3/8" FPT
Cord/Lead Length: 47 inches
Weight 16oz
WIRING INSTRUCTIONS: Lead #1 to Line/Power, Lead #2 to Load, Yellow with green tracer to Ground.

Equipment Type Pressure Washer
High pressure in-line flow switch
Activates with flows as little as 0.5gpm
Ideal for low amp applications
Perfect for triggering a solenoid
Minimal pressure drop up to 12 GPM
Compact design can be mounted in any direction
PSI 5000
Temperature 50° F to 175° F
Gallons Per Minute .5 GPM to 12 GPM
Inlet 3/8" FPT
Outlet 3/8" FPT
Required Flotation: 60 mesh
Electrical Termination: 24AWG 12" leads
Switch Ratings: Contact Type: Form A, Contact Rating Max: 200VDC, Switching Current: 0.2 amps, Carry Current: 1.2 amps, Breakdown Voltage, Max: 250 VDC

Pilot: 1/4" hose barb
Lead length: 48" 18awg
Electrical service life: 200,000 operations
PSI 4000
Micro switch technology eliminates reed switch
Highpressure inline flow switch
Activates with as little as .5 gpm flow
Minimal pressure drop up to 12 gpm
Mount in vertical position
Gallons Per Minute 12
Equipment Type Pressure Washer
Temperature 40°-180° F Operating Temperature
250 VAC switching voltage maximum
5 Amps switching current maximum
30 OHM contact resistance with leads
200,000 operations electrical service life
10 million operations mechanical service life
Inlet 3/8" FPT
Outlet 3/8" FPT
Install the flow switch VERTICALLY to the output side of the unloader, with the 2 conductor lead wires exiting from the top. If your system uses a downstream chemical injector, it should be mounted on the output side of the flow switch. Pilot model requires a direct connection to the water supply feed line to provide a pilot signal. This is accomplished by installing a tee fitting (with a 1/4" hose barb fitting) directly in the water supply feed line. The tube must be installed before the float valve. Install an appropriate length of 1/4" ID reinforced polyvinyl tubing between the tee fitting and the valve pilot port.

Equipment Type Pressure Washer
Designed to operate in response to a low volume, low pressure flow and still allow for a high pump output flow. The system will provide reliable switching with a little as .75 GPM flow and 18 PSI from the city water supply and will also allow pump output flow up to 18.7 GPM @ 4000 PSI with negligible pressure drop through the valve. Provides durable, reliable on/off switching for systems that require start/stop capability.
Maximum volume/Pressure 18.7 GPM 4000 PSI (minimum burst is 4x working pressure)
Minimum Volume/Pressure: .75 GPM 18 PSI
Switch Contact Ratings: @24 volts AC 75 watts, 3 amps: @120 volts AC 100 watts, 0.8amps
Temperature 190° F
Weight 2.5 lbs

Equipment Type Pressure Washer
Install in Horizontal Position
PSI 4350 PSI (300 bar) maximum
Temperature 180°F (80°C) maximum
Gallons Per Minute 8 GPM (30 L/MIN) maximum
Volt 12-250v maximum
Inlet 3/8" FPT
Outlet 3/8" FPT

Equipment Type Pressure Washer
Designed to operate in response to a low volume, low pressure flow and still allow for a high pump output flow. The system will provide reliable switching with a little as .75 GPM flow and 18 PSI from the city water supply and will also allow pump output flow up to 18.7 GPM @ 4000 PSI with negligible pressure drop through the valve. Provides durable, reliable on/off switching for systems that require start/stop capability.
Maximum volume/Pressure 18.7 GPM 4000 PSI (minimum burst is 4x working pressure)
Minimum Volume/Pressure: .75 GPM 18 PSI
Switch Contact Ratings: @24 volts AC 75 watts, 3 amps: @120 volts AC 100 watts, 0.8amps

Equipment Type Pressure Washer
PSI 75 to 5000
Temperature 176°F
Volt 250 Volts
3.0 amps
Inlet 3/8" FPT
Outlet 3/8" FPT
Cord Length: 47"
Weight 1 lbs
Mounts in any position with a free floating magnet configuration. Water flow activated switch to control the burner on and off. Although the most popular application is high pressure washing, the flow switch is suitable for other applications including carpet cleaning equipment, steam boiler and other types of pumping systems.