Flow switches are used to detect and measure the rate of flow of a liquid or gas in a pipe. They can be used for applications such as monitoring the flow of water, air, hydraulic fluid, coolant, steam, and other fluids. The best flow switches provide accurate measurements of flow rate and are designed for long-term reliable operation in a variety of industrial and commercial applications. They are also known for their durability and versatility, making them an excellent choice for many different applications.
Best Flow Switches
| Rank | Product Name | Score |
|---|---|---|
|
1
 |
Aqualarm Liquid Detector
|
9. 7
|
|
2
 |
Gems Sensors FS-380
|
9. 5
|
|
3
 |
McDonnell & Miller FS4-3
|
9. 1
|
|
4
 |
General Pump 100975
|
8. 8
|
|
5
 |
Dwyer Flotect Series V10
|
8. 6
|
|
6
 |
Gems Sensors FS-500
|
8. 2
|
1. Aqualarm Liquid Detector
I recently purchased the Aqualarm Liquid Detector and I am beyond pleased with it! I was worried about water damage in my home, so I decided to invest in this product. This detector is incredibly easy to install and use. It is also very sensitive and can detect even the smallest amounts of liquid. I also love that it has an alarm that sounds when liquid is detected, so I know right away if there is an issue. I highly recommend the Aqualarm Liquid Detector to anyone who is worried about water damage in their home.
- Monitors water levels with a sensor and alarm
- Provides an adjustable alarm level
- Uses a visual display to indicate the liquid level
- Has a remote alarm option that can be used to alert personnel in other areas
- Provides adjustable system settings for response to liquid level changes
- Has a built-in programmable timer for intervals between alarms
- Uses a dual-channel design for redundant safety
2. Gems Sensors FS-380
The Gems Sensors FS-380 is a reliable, cost effective, and highly accurate liquid level sensor. It is designed for a wide range of industrial applications including pump and tank monitoring, HVAC, and water treatment systems. The FS-380 is equipped with a stainless steel body and mechanical float, making it extremely durable and long-lasting. It has a range of up to 38 inches, providing precise measurements even in turbulent or turbulent liquid conditions. The FS-380 features simple installation and requires no calibration or programming, making it a great choice for applications that need quick and accurate level sensing. Its wide range of temperature and pressure ratings make it suitable for a variety of applications. Overall, the Gems Sensors FS-380 is an excellent choice for accurate, reliable, and cost-effective liquid level sensing.
- Highly reliable, cost-effective flow switch for monitoring liquid flow.
- Rugged construction with a rugged polypropylene body.
- Easy installation with two mounting studs, no tools or special connectors required.
- Provides accurate, repeatable switching up to 380 GPM.
- Wide range of temperature ratings from 0 – 200°F (-18 to 93°C).
- NEMA 6P and IP68 rated for protection against dust, moisture, and water.
- Optional accessories available for extended range, higher pressure and higher temperatures.
3. McDonnell & Miller FS4-3
I recently bought the McDonnell & Miller FS4-3 and I am really happy with it. It is a great choice for any commercial application, as it is designed for high-volume use. It is also surprisingly easy to install and set up. The instructions were clear and the installation was smooth. The FS4-3 also has a great temperature range and is incredibly reliable. I have been using it for a few months now and it has been working flawlessly. I highly recommend this product to anyone looking for a quality and reliable temperature control.
- Controls hydronic heating boilers, water heaters, circulators and some small horsepower motors
- Remote reset option available
- UL Recognized
- Manual reset option if desired
- Visible test/reset button
- Stainless steel cover
- Non-corrosive bronze body
- Contacts rated at 30VA
- Tri-state burners (automatic, off, manual)
- Automatic low water cutoff
4. General Pump 100975
The General Pump 100975 is a great and powerful pressure washer. It comes with an incredibly powerful motor and is capable of delivering a maximum of 4,000 PSI and 8 GPM. It also comes with an adjustable pressure control which allows you to easily adjust the pressure to suit whatever job you’re doing. The trigger gun is also ergonomic and easy to use, making the whole process of pressure washing faster and smoother. The pump also has a number of safety features such as a thermal relief valve and a chemical injector which makes using it much safer. This is a great pressure washer and is perfect for any professional or commercial use, as well as for use around the home.
- Maximum Pressure: 4000 PSI
- Flow Rate: 14.5 GPM
- Shaft Diameter: 3/4″
- Fits Engines With up to 24 HP
- Heavy-Duty Construction
- Efficient Thermal Relief Valve
- Thermally Protected Motor
5. Dwyer Flotect Series V10
I recently installed the Dwyer Flotect Series V10 and I’m absolutely thrilled with it. It’s incredibly well built, easy to install and its performance is outstanding. It’s a great value for the money and I can’t recommend it enough. The V10 provides precise flow control, allowing for precise measurements of water pressure and flow rate. The digital display is also easy to read, making it very easy to monitor the flow rate. Furthermore, the V10 has a very long service life and requires minimal maintenance. All in all, the Dwyer Flotect Series V10 is a great product that I highly recommend.
- Provides accurate and reliable flow measurement
- Mechanical, visual, and electrical flow switch
- All stainless steel and brass construction
- Available in ¼ and ½ sizes
- Suitable for a wide range of applications and industries
6. Gems Sensors FS-500
I recently purchased the Gems Sensors FS-500 and I have to say, I’m very impressed. The device is very easy to use and it has a lot of features that make it great for a wide variety of applications. It has a wide range of operating temperature, high accuracy, and a long life. It also has a built-in LCD display and is able to be configured with a wide range of sensors. Overall, I’m very pleased with the quality and reliability of the Gems Sensors FS-500. I would highly recommend it to anyone looking for a reliable and accurate sensing device.
- Compact, heavy-duty pressure switch
- Designed to switch on and off pressure or vacuum systems
- Rugged construction with stainless steel wetted parts
- Precision sealed adjustable set points
- Pressure range of 71.7 kPa to 5.5 MPa (10.5 to 800 psig)
- Max. working temperature of 93°C (200°F)
