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Flow Switches

Flow switches are critical safety and monitoring devices used across numerous industries to regulate and control the flow of liquids or gases through pipes, channels, and systems. These versatile switches play a vital role in ensuring proper flow rates, preventing system damage, and triggering alarms or actions in case of flow disruptions.

What Are Flow Switches?

A flow switch is a device used to monitor and detect the flow rate of a liquid or gas within a pipe, channel, or system. When the flow reaches, exceeds, or falls below a predefined threshold, the switch activates to trigger a specific action, such as starting or stopping a pump, closing a valve, or sounding an alarm.

Where Are Flow Switches Used?

Flow switches are crucial for applications where maintaining a specific flow rate is essential to ensure system efficiency and prevent damage or failures. They are commonly used in HVAC systems to regulate fluid flow in heating and cooling units, water treatment plants to maintain consistent flow in filtration systems, industrial manufacturing to control liquids and gases in automated processes, and chemical processing to safely manage the flow of hazardous substances.

Types of Flow Switches Available

At Applications Engineering, we provide a variety of flow switches tailored to meet diverse application needs:

Paddle Flow Switches: These mechanical switches use a vane or paddle that moves with fluid flow to trigger an electrical circuit. Durable and cost-effective, they are ideal for HVAC systems, cooling towers, and industrial pumps.

Magnetic Flow Switches: Using a magnetic field to detect fluid movement, these non-mechanical switches are perfect for water treatment, irrigation, and chemical processing applications. They offer reliable performance with minimal maintenance.

Electronic Flow Switches: Equipped with advanced digital sensors, these switches provide real-time, highly accurate flow monitoring. Ideal for industries like pharmaceuticals and food production, they offer adjustable settings and integration with automated systems.

Why Choose Applications Engineering?

At Applications Engineering, we are committed to delivering reliable and precise flow monitoring solutions designed to meet the highest quality standards. Our range of flow switches is engineered to comply with all relevant industry regulations, ensuring dependable performance in even the most demanding environments.

This dedication to quality and compliance enhances operational efficiency, protects equipment, and ensures safety across a wide range of applications. With a focus on durability, precision, and reliability, our flow switches are the trusted choice for professionals who require performance they can rely on. Get in touch today.

Flow Switches – Plastic Body

The plastic flow switches provide a high level of performance when it comes to ensuring any reduction in pressure is kept to a minimum, as well as other specific duties they are required to carry out. Our plastic body variety is available in different sizes and for a range of applications. Whatever function you require our plastic flow switches to perform, we are sure to have the right monitoring equipment for you in this area of our site. Included in our product catalogue is the residential and domestic fire sprinkler paddle flow switch.

Frequently Asked Questions

What is a plastic body flow switch?

A plastic body flow switch is designed to ensure any reduction in pressure is kept to a minimum. They can also be used for other more specific duties, depending on the system they’re being used in.

I’m not sure which type of switch I need – can you help?

There are a lot of options to choose from so don’t worry, we understand how confusing it can be. If you’re stuck, contact us today and a member of our team will help you find the right switch.

Which types of system are flow switches used in?

All sorts! Whether it be a photocopier, heavy-duty floor cleaner, swimming pool, or industrial dishwasher, plastic body flow switches are vital across a number of systems.

Which switch is best – the FS-3, FS-4 or FS-6 series?

The choice really depends on what it is you are looking for. The FS-3 series is specifically designed for use in clean post-filtered water, whereas the FS-6 and FS-4 series are better suited to more industry-based systems.

Flow Switches – Metal Body

Metal flow switches can be found in a number of specific applications, including remote alarms and indicators. They can be paddle flow, adjustable or inline. These products are useful at operating the flow range of water, air, oil or gas in a process. Once you have selected the metal flow switches you require, or anything else included within our great value product range, simply get in touch with our team here at Applications Engineering and we will ensure your order is sent out to you straight away.

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R15 - All Stainless Steel Compact Paddle Flow Switch
R15 – All Stainless Steel Compact Paddle Flow Switch
Model: AE-R15KW23STH3C4000
£63.63
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AE-VST100-A
AE-VST100-A
Model: AE-VST100-A
Price on request
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FS-200E-A - Adjustable Type Flow Switch
FS-200E-A – Adjustable Type Flow Switch
Model: FS-200E-A
Price on request
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FS-105E - Series Adjustable Flow Switch
FS-105E – Series Adjustable Flow Switch
Model: FS-105E
Price on request
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FS-107E - Adjustable Flow Switch Available with Visual Indication
FS-107E – Adjustable Flow Switch Available with Visual Indication
Model: FS-107E
Price on request
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AE-VKS JP - Flow Switch
AE-VKS JP – Flow Switch
Model: AE-VKS JP
Price on request
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FS-925E/FS-926E - Adjustable Type Flow Switch
FS-925E/FS-926E – Adjustable Type Flow Switch
Model: FS-925E/FS-926E
Price on request
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FS-10798E - Adjustable Type Flow Switch
FS-10798E – Adjustable Type Flow Switch
Model: FS-10798E
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AE-VKS JB - LPCB Approved Flow Switch
AE-VKS JB – LPCB Approved Flow Switch
Model: AE-VKS JB
Price on request
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FS-927 - Series Flow Switch
FS-927 – Series Flow Switch
Model: FS-927
Price on request
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FS-380 - Series Flow Switch
FS-380 – Series Flow Switch
Model: FS-380
Price on request
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FS-480 - Series Flow Switch
FS-480 – Series Flow Switch
Model: FS-480
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FS-550(E) - Paddle Flow Switch
FS-550(E) – Paddle Flow Switch
Model: FS-550(E)
Price on request
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SP - Thermal Dispersion Flow Switch
SP – Thermal Dispersion Flow Switch
Model: SP
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AE-VSR-S - Residential Flow Switch
AE-VSR-S – Residential Flow Switch
Model: AE-VSR-S
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FS-10798(E) - EXi Intrinsically Safe ATEX Flow Switch
FS-10798(E) – EXi Intrinsically Safe ATEX Flow Switch
Model: FS-10798(E)
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FS-200(E)-(A) - Exi Intrinsically Safe ATEX Flow Switch
FS-200(E)-(A) – Exi Intrinsically Safe ATEX Flow Switch
Model: FS-200(E)-(A)
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FS-400(E)-(A) - Exi Intrinsically Safe ATEX Flow Switch
FS-400(E)-(A) – Exi Intrinsically Safe ATEX Flow Switch
Model: FS-400(E)-(A)
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FS-550(E) - EXi Intrinsically Safe ATEX Paddle Flow Switch
FS-550(E) – EXi Intrinsically Safe ATEX Paddle Flow Switch
Model: FS-550(E)-EXi
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FS-925/FS-926(E) - Exi Intrinsically Safe ATEX Flow Switch
FS-925/FS-926(E) – Exi Intrinsically Safe ATEX Flow Switch
Model: FS-925/FS-926(E)
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SF1800 - Stainless Steel Paddle Flow Switch
SF1800 – Stainless Steel Paddle Flow Switch
Model: SF1800
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Frequently Asked Questions

How to Install and Test a Flow Switch

To install a flow switch it must be positioned where fluid flow is smooth and uninterrupted. After installation, connecting the switch to the control system or alarm panel is required. Testing involves running the system to check if the switch activates at the correct flow rate, preventing potential issues like pump failure.

What’s the Difference Between a Flow Switch and a Pressure Switch?

A flow switch monitors the movement of a fluid through a system, triggering actions based on flow start, stop, or rate, while a pressure switch monitors and responds to changes in fluid pressure, activating when pressure exceeds or falls below a set threshold. Flow switches are ideal for ensuring proper fluid flow, while pressure switches maintain safe pressure levels in systems.

How does a flow switch help with water conservation?

A flow switch helps conserve water by shutting off equipment like pumps or valves when no water flow is detected, reducing waste and preventing overuse.

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