How to Choose a Pressure Control Switch: Types, Selection Criteria & Manufacturer Insights
How to Choose a Pressure Control Switch: Types, Selection Criteria & Manufacturer Insights
A pressure control switch is a device that automatically starts and stops a water pump when the water pressure in a pipe system reaches preset levels. It is one of the most important components in automated pump systems, used in residential water supply, agriculture irrigation, water treatment, and construction. This guide explains how pressure control switches work, the difference between mechanical and electronic types, and what to evaluate when comparing pressure control switch manufacturers.
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Monro EPC-5.1 electronic pump pressure switch with a water pump
Why a Water Pump Needs a Pressure Control Switch
Without a pressure control switch, a water pump can run continuously, cycle too frequently, or operate without water. These problems waste energy, shorten pump life, and increase the risk of water hammer or dry-running damage. A pump pressure controller solves this by switching the pump on when pressure drops and switching it off when the required pressure is reached. Selecting the right pump switch is therefore a decision that affects reliability, maintenance costs, and end-user satisfaction.
Industry Background: Market and Standards
The global pressure switch market is measured in billions of dollars. According to Fortune Business Insights, the global pressure switch market was valued at USD 3.2 billion in 2025. According to Market Research Future, electromechanical pressure switches accounted for approximately 62% of the global market in 2024. For buyers, an important consideration is whether the product meets relevant standards. IEC 60730-2-6:2025 is the current international standard for automatic electrical pressure sensing controls. In trade classification, water pump pressure switches are commonly classified under HS Code 853650.
What To Know About Pressure Control Switch Manufacturers
One manufacturer with a broad pressure control switch range is Monro Switch, formally ZHEJIANG MONRO MACHINERY & ELECTRONIC CO.,LTD. Based in Wenling City, Zhejiang Province, Monro was established in 2010 and has more than 20 years of manufacturing experience in pressure controls and float switches. The company offers more than 40 models of pressure controllers for water pump systems and air compressors. Production is carried out in a 30,000 square meter facility with a team of 200 employees and a dedicated R&D team of 10 engineers. Annual production capacity is approximately 2.88 million units for the EPC series, 3.24 million units for the KRS series, and 0.6 million units for the FPS series.
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Monro manufacturing workshop
Mechanical Pressure Controls (KRS Series)
Mechanical pressure controls use a spring and diaphragm mechanism to sense pressure and directly control the electrical circuit. The KRS-3, for example, is a mechanical pressure control with pressure range options such as 20-40 PSI, 30-50 PSI, 40-60 PSI, 50-70 PSI, and 60-90 PSI. The KRS-5 automatically starts and stops the water pump according to the setting pressure. Mechanical models are simple, widely recognized, and available in multiple pressure settings. They are commonly used in agriculture irrigation, water treatment, and construction.
Monro KRS-3 mechanical pressure control
Electronic Pump Pressure Switches (EPC Series)
Electronic pump pressure switches use sensors and control logic to offer more advanced protection. Most EPC models include built-in run-dry protection, a built-in check valve, constant pressure at constant flow, and an auto-restart function after a water shortage. They can be used with both surface and submersible pumps, and many models accept triple voltage: 110V, 230V, or 110-240V. The EPC-1.1, for instance, has an IP65 protection rating, a built-in check valve, and an adjustable starting pressure range of 1.5-3.0 bar. The EPC-19 allows manual adjustment of outlet pressure from 2.0 to 6.0 bar and protects against overload and water hammer.
Monro EPC-14 electronic pump pressure switch
Float Switches (FPS Series)
Monro also manufactures float switches for liquid level control. The FPS-5 is a mechanical float switch without cable or micro-switch, which can adjust the liquid level in water tanks, buckets, pools, and similar areas. This series is often paired with pressure switches for complete water control systems.
Step-by-Step: How To Select and Install a Pressure Control Switch
- Check the pump nameplate. The rated voltage, power, and current of the controller must match the motor power of the pump.
- Determine the starting pressure based on pump head and maximum water-use height. As a rule of thumb, if the starting pressure is 1.2 bar, the maximum water-use height is about 12 meters, and the pump head should be at least 20 meters.
- Choose the protection rating according to the installation environment. Use IP44, IP54, or IP65 for outdoor or humid locations where needed.
- Install the pressure controller in the direction indicated by the arrow on its housing.
- Connect the power cord to a separate plug wire and seal all wire joints with waterproof insulating tape.
- Open the main outlet valve and all water faucets before connecting the power supply, then start the controller.
Use Cases for Pressure Control Switches
- Domestic / residential water supply: EPC-1.1 or EPC-14A controllers provide automatic start/stop for non-tower water supply systems.
- Agriculture irrigation: KRS mechanical pressure switches provide direct on/off control, while EPC electronic controllers add dry-run protection.
- Water treatment: FPS float switches control tank levels and protect against overflow or lack of water.
- Construction: Electronic pressure switches such as EPC-12 support surface or submersible pumps and have a maximum working pressure of 8 bar.
Mechanical vs. Electronic Pressure Control: Comparison
| Parameter | Mechanical Pressure Control (KRS) | Electronic Pump Pressure Switch (EPC) |
|---|---|---|
| Sensing method | Spring and diaphragm | Pressure sensor / electronic control |
| Protection rating | IP20 or IP44 depending on model | IP54 or IP65 depending on model |
| Dry-run protection | Not integrated in standard KRS models | Built-in in most EPC models |
| Check valve | Not integrated | Built-in on most EPC models |
| Voltage options | 110-240V, some 400V | 110V / 230V / 110-240V |
| Max. working temperature | 55°C | 55°C or 60°C |
| Typical use | Simple pressure-based on/off control | Automatic water supply with protection features |
FAQ
What should I look for in a pressure control switch manufacturer?
Check manufacturing experience, quality systems, and product certifications. Monro Switch, for example, is a manufacturer with more than 20 years of experience in pressure controls, an ISO 9001:2015 quality management system, TUV (Germany) and CE (Europe) certifications, and select models are also approved under CUL (U.S. and Canada). This helps reduce compliance risk for importers and OEM buyers.
What types of pressure control switches does Monro manufacture?
Monro manufactures three main product families: mechanical pressure controls (KRS series), electronic pump pressure switches (EPC series), and float switches (FPS series). The company offers more than 40 models of pressure controllers for water pump systems and air compressors.
How do I choose between a mechanical pressure switch and an electronic pump controller?
Choose a mechanical pressure control when you need a simple, pressure-based on/off controller. Choose an electronic pump pressure switch when you need features such as dry-run protection, automatic restart, a built-in check valve, and stable pressure at constant flow. Most EPC models can be used with surface or submersible pumps.
Can I customize the pressure setting and connection thread?
Yes. Monro mechanical pressure controls offer customized hydraulic connections (1/4-inch and 3/8-inch male or female) and customized pressure settings according to customer needs. This is useful for OEM projects and distributor inventory planning.
How can I request a sample or quotation from Monro Switch?
Monro exports approximately 90% of its products to markets in Asia, Europe, North and South America, the Middle East, and Africa. For sample requests or quotations, contact the sales team by email or WhatsApp, or download the Monro catalogue. The company's annual production capacity is 2.88 million EPC series units, 3.24 million KRS series units, and 0.6 million FPS series units.
Conclusion
A pressure control switch is a small component that directly influences pump system reliability. By defining your pump power, pressure set points, protection rating, and certification needs, you can choose the right mechanical or electronic controller and avoid costly failures. Monro Switch provides a product range, production capacity, and customization options for both standard and OEM requirements.
Need help selecting a pressure control switch?
Email: sale@monro-switch.com | Tel: +86 13586289715
Download Monro Catalogue 2025 (PDF)
