These cookies make our website work. They include logging personal details, like login/sign-up or account data, browser information, images & videos, and shopping cart journey.
In addition, we use optimization cookies to test new features and designs on our website. The information collected helps us improve our website and customers' experience.
These cookies are used to understand the performance and relevancy of our adverts, to provide you with personalised adverts on other websites and social media, to track when you have arrived at our site from a recognised third-party affiliate website, and to track if you made a purchase based on the adverts we displayed to you.
These cookies enable us to provide personalised product and content recommendations, to make the browsing experience more relevant to you.
These cookies are used to offer customer surveys and feedback, to improve search results, and to allow you to share content from our website on social media.
These cookies help us improve our website by collecting and reporting information on how you use it.
- Pumps
- Pump Controls
- Flow Switches
Flow Switches
<p>Flow switches detect fluid flow in hydraulic systems and prevent leaks. They are used in pumps in the water treatment, oil & gas and chemical industries.</p>
A| Style | Model | Price (ex. VAT) | |
|---|---|---|---|
| A | FS-10798 25365 | €977.96 | |
| A | FS-10798 25366 | €1,571.87 |
A| Style | Model | Price (ex. VAT) | |
|---|---|---|---|
| A | 230500-1-20 | €782.88 | |
| A | 230500-2-20 | €805.87 | |
| A | 230500-3-20 | €805.87 | |
| A | 230500-4-20 | €805.87 |
Series FS6 Switch Liquid Flow
McDonnell & Miller FS6 liquid flow switches are designed to monitor the flow of liquids, such as water or oil, in pipes and systems. These liquid flow switches are highly sensitive and used in cooling systems, booster pumps, water treatment systems and compressors. They have a sealed compartment that protects the switch from liquids and a sensitivity adjustment screw to prevent false tripping of the flow switch. These liquid flow switches serve as a crucial safeguard, preventing damage and potential hazards caused by insufficient or excess liquid flow. They can be operated at temperatures ranging from 32 to 225 degrees F and can withstand pressures up to 100 psi. These liquid flow switches are integrated with an SPDT switch for monitoring the direction of liquid flow.
McDonnell & Miller FS6 liquid flow switches are designed to monitor the flow of liquids, such as water or oil, in pipes and systems. These liquid flow switches are highly sensitive and used in cooling systems, booster pumps, water treatment systems and compressors. They have a sealed compartment that protects the switch from liquids and a sensitivity adjustment screw to prevent false tripping of the flow switch. These liquid flow switches serve as a crucial safeguard, preventing damage and potential hazards caused by insufficient or excess liquid flow. They can be operated at temperatures ranging from 32 to 225 degrees F and can withstand pressures up to 100 psi. These liquid flow switches are integrated with an SPDT switch for monitoring the direction of liquid flow.
A
B
CFlow Switch 3.5 - 600 Spdt
A
B
C
D
E
F
G
H
I
JA| Style | Model | Price (ex. VAT) | |
|---|---|---|---|
| A | 230500-2-5 | €805.87 | |
| A | 230500-2-40 | €767.82 | |
| A | 230500-3-5 | €844.54 | |
| A | 230500-3-40 | €805.87 | |
| A | 230500-4-5 | €844.54 |
A| Style | Model | Price (ex. VAT) | |
|---|---|---|---|
| A | 230500-1-60 | €805.87 | |
| A | 230500-2-60 | €844.54 | |
| A | 230500-3-60 | €805.87 |
Liquid Flow Switch
A
B
C
D
EF| Style | Model | Price (ex. VAT) | |
|---|---|---|---|
| A | RFS 155425 | €493.57 | |
| A | RFS 155485 | €494.85 | |
| A | RFS 156265 | €669.44 | |
| A | RFS 156268 | €651.47 | |
| A | RFS 180395 | €633.01 | |
| A | RFS 181688 | €676.89 | |
| B | FS-550 29609 | €525.07 | |
| C | FS-550 29608 | €803.60 | |
| D | FS-400 26600 | €497.71 | |
| D | FS-400 26601 | €515.09 | |
| D | FS-400 26602 | €488.89 | |
| E | FS-200 26615 | €503.00 | |
| E | FS-200 26616 | €529.96 | |
| E | FS-200 26838 | €503.00 | |
| F | FS-10798 25364 | €1,577.27 |
A| Style | Model | Price (ex. VAT) | |
|---|---|---|---|
| A | FS-150 NC 0.5GPM | €221.84 | |
| A | FS-150 NO 1.0GPM | €214.00 | |
| A | FS-150 NC 1.0GPM | €205.41 | |
| A | FS-150 NO 3.0GPM | €221.84 | |
| A | FS-150 NO 0.5GPM | €221.84 | |
| A | FS-150 NO 2.0GPM | €210.56 |
FS-380 Series Flow Switch
A
B
C| Style | Model | Price (ex. VAT) | |
|---|---|---|---|
| A | FS-380P 197081 | €126.41 | |
| A | FS-380P 197084 | €126.41 | |
| B | FS-380 179993 | €591.95 | |
| B | FS-380 179992 | €687.72 | |
| C | FS-380 168433 | €250.01 | |
| C | FS-380 168432 | €253.64 | |
| C | FS-380 181130 | €271.18 | |
| A | FS-380P 197085 | €134.40 | |
| A | FS-380P 197082 | €126.41 | |
| A | FS-380P 197083 | €134.40 | |
| A | FS-380P 209876 | €126.41 | |
| B | FS-380 179995 | €627.17 | |
| B | FS-380 193482 | €663.93 | |
| C | FS-380 178353 | €271.18 | |
| C | FS-380 168435 | €271.18 | |
| C | FS-380 168434 | €256.82 | |
| B | FS-380 179996 | €657.29 |
A| Style | Model | Price (ex. VAT) | |
|---|---|---|---|
| A | FS-4 122352 | €237.37 | |
| A | FS-4 122354 | €244.59 | |
| A | FS-4 122356 | €227.57 | |
| A | FS-4 122353 | €256.36 | |
| A | FS-4 122355 | €218.06 |
A| Style | Model | Price (ex. VAT) | |
|---|---|---|---|
| A | FS-500 170232 | €179.96 | |
| A | FS-500 170233 | €176.72 | |
| A | FS-500 175117 | €176.90 | |
| A | FS-500 170234 | €179.96 | |
| A | FS-500 170235 | €179.96 | |
| A | FS-500 170231 | €803.60 |
A| Style | Model | Price (ex. VAT) | |
|---|---|---|---|
| A | FS-926 26938 | €591.62 | |
| A | FS-926 26952 | €961.53 | |
| A | FS-926 26939 | €561.48 | |
| A | FS-926 26941 | €591.62 | |
| A | FS-926 26942 | €561.48 | |
| A | FS-926 26951 | €961.53 | |
| A | FS-926 26956 | €917.48 |
A| Style | Model | Price (ex. VAT) | |
|---|---|---|---|
| A | FS-927 70820 | €236.26 | |
| A | FS-927 70822 | €248.97 | |
| A | FS-927 70825 | €237.65 | |
| A | FS-927 70827 | €225.43 | |
| A | FS-927 70829 | €225.43 | |
| A | FS-927 70831 | €191.63 | |
| A | FS-927 70821 | €237.65 | |
| A | FS-927 70823 | €217.15 | |
| A | FS-927 70826 | €226.61 | |
| A | FS-927 70828 | €200.82 | |
| A | FS-927 70830 | €236.26 |
ASeries FS5 Switch Liquid Flow
ABSeries FS25 General Purpose Flow Switch
A
BSeries FS7 Switch Liquid Flow
A
B
C
DFlow Switches
A
B
C| Style | Model | Price (ex. VAT) | |
|---|---|---|---|
| A | F261KEH-V01C | €296.84 | |
| B | F261KFH-V01C | €389.07 | |
| A | F261KFH-V02C | €309.73 | |
| A | F261MEH-V01C | €549.13 | |
| A | F261MFH-V01C | €561.04 | |
| A | F261KAH-V01C | €260.98 | |
| A | F261MAL-V01C | €487.58 | |
| C | F261MAH-V01C | €306.60 |
Flow Switches
A
B
C
D
E
F
G
H
I
JLiquid Flow Switches
A
B
C
D
E| Style | Model | Price (ex. VAT) | |
|---|---|---|---|
| A | V6EPB-B-S-6-0 | €469.88 | |
| B | V8 | €206.05 | |
| A | V6EPB-B-D-4-B | €737.90 | |
| A | V6EPB-B-D-6-0 | €572.04 | |
| A | V6EPS-S-S-5-S | €1,357.27 | |
| A | V6EPB-B-D-5-MI | €946.99 | |
| A | V6EPB-B-S-1-B | €493.04 | |
| C | V4-SS-2-D-U | €1,650.62 | |
| A | V6EPS-S-S-2-S | €795.30 | |
| A | V6EPS-S-D-1-S | €784.05 | |
| D | V8-WP | €285.82 | |
| A | V6EPB-B-D-3-B | €671.64 | |
| A | V6EPB-B-S-1-MI | €482.34 | |
| A | V6EPB-B-S-2-MI | €539.62 | |
| A | V6EPB-B-D-4-MI | €825.30 | |
| E | V7-WBS-30N | €242.44 | |
| A | V6EPB-B-S-5-MI | €760.93 | |
| A | V6EPS-S-S-1-S | €667.68 | |
| A | V6EPB-B-S-2-B | €514.22 | |
| A | V6EPS-S-D-6-0 | €814.74 | |
| A | V6EPB-B-S-6-MI | €1,047.51 | |
| A | V6EPB-B-S-4-B | €643.48 | |
| A | V6EPB-B-D-3-MI | €740.65 | |
| A | V6EPB-B-S-6-B | €973.15 | |
| A | V6EPS-S-S-LF | €823.88 |
FSD Series Flow Switches
A
B| Style | Model | Price (ex. VAT) | |
|---|---|---|---|
| A | FSD1-AP-26H | €392.39 | |
| B | FSD75-AP-6H | €325.56 |
Flow Switches
Flow switches are primarily designed to monitor the air, steam or liquid flow and send signals to the pump for automatic ON / OFF switching with the rise and fall of water level; ideal for regulating water cooling equipment and water treatment or hydronic heating systems. Raptor Supplies offers a wide range of these liquid flow switches from brands like Bradley, Dwyer Instruments, Mcdonnell & Miller, Dayton, Johnson Controls, Gems Sensors and Taco. Gems Sensors flow switches uses 100-micron filtration technology and are less susceptible to clogging than other high-pressure inline flow switches. These units come equipped with one-piece magnetic composite piston which actuates the sealed reed switch when displaced by the pressure difference in fluid flow, thereby activating remote alarms or indicators. They are available in brass, polypropylene and stainless steel construction with a maximum pressure rating and flow rate of 1500 psi and 2 GPM, respectively. Taco industrial flow switches feature flow sensitivity adjustment mechanism for setting a wide adjustment range to start or stop an electronically operated device when flow / no-flow condition occurs. These low-flow switches come with a highly malleable EPDM seal providing anti-hardening, cracking and leakage properties and improving the performance in high-pressure applications such as chillers, boilers, heating systems and water systems. They are available in NEMA 1 and NEMA 4 rated enclosures providing protection against the ingress of foreign contaminants and are ideal for use with 1 - 8 inch (outer diameter) pipe sizes.
Working Mechanism
- The flow switch contains a sensor element positioned within the fluid's flow route.
- When fluid flows through the sensor element, it exerts a force or causes a pressure differential.
- The flow switch has an adjustable actuation threshold, which is the predetermined flow rate or pressure level that must be exceeded for the switch to activate.
- The force or pressure on the sensor element causes a mechanical or electrical response within the flow switch when the fluid flow reaches or exceeds the actuation threshold.
- When a flow switch is activated, it produces an output signal that can be used to initiate control functions, such as activating an alarm, opening or closing valves or commencing a shutdown sequence.
Frequently Asked Questions
How can I maintain the accuracy of my flow switch over time?
- Regularly clean the flow switch and inspect it for any signs of damage, corrosion or debris buildup.
- Verify that the flow switch is properly aligned within the flow path to ensure accurate measurements.
- Periodically calibrate the flow switch to verify its accuracy.
- Take into account the properties of the fluid being monitored, such as viscosity or density, as these factors can impact the accuracy of the flow switch.
- Be aware of the ambient conditions surrounding the flow switch. Consider protective enclosures for use in harsh environments.
- Maintain a record of the flow switch's calibration dates, maintenance activities and any observed issues.
What is the difference between a flow switch and a pressure switch?
A flow switch measures the flow rate of media flowing through a process line, whereas a pressure switch measures the pressure within a process line, pipe or vessel.
How do I select the right flow switch for my application?
Consider factors like the type of fluid, flow rate, operating conditions (temperature or pressure) and pipe size.
Do these flow switches require regular maintenance?
These flow switches require minimal maintenance. However, periodic inspection and cleaning are necessary to ensure proper functioning.
Can I use these flow switches for both liquids and gases?
Yes, these flow switches can be used to detect the flow of both liquids and gases.
We are here to help!
Looking for a part not listed here?
Popular Search Queries
Explore More
- ALLIANCE HOSE & RUBBER
- PERMAKLEEN
- HADCO
- BONEHAM
- KEYSHAFT
- Drum Hand Trucks
- Wire Rope Clips
- Display Cases
- Arbor Press
- Hydraulic Filter Elements
- APPROVED VENDOR Brass FNPT x MNPT Street Elbow, 45 Degrees
- PLASTICADE Crowd/Traffic Control Barricades
- MARTIN SPROCKET Hanger Bearings, Nylatron
- CHICAGO FAUCETS Flanges
- GRAINGER Recycled Padded Mailers