Flow Switch
Your Professional Flow Switch Supplier
Hongnuo (shenyang) General Machinery Co., Ltd. is an international, professional, and technology-driven manufacturer of intelligent fluid equipment. Integrating research, production, and sales, we are committed to innovation in intelligent fluid measurement and control.
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Replaces paddle-type flow switches.No moving parts. Detects flow/no-flow in pipes DN15–DN350. NPN/PNP output. IP67. -
HNF10-AC Thermal flow switchField-adjustable setpoint via potentiometer. PNP / NPN / relay output selectable. Water, oil, or air. No moving parts. IP67.
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HNF10-B Electronic Flow Switch8 LEDs show flow trend at a glance. 3 red + 1 yellow + 4 green – you see immediately if flow is below, at, or above setpoint. Set via induction
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Relay output model. Drives contactors, solenoid valves, and alarm lamps directly – no intermediate relay needed. 8 LEDs show flow trend at a glance: 3 red + 1 yellow + 4 green.
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HNF10-D Piston Flow SwitchMechanical in-line flow switch. Piston + reed switch – no electronics, no field calibration. Setpoint factory-set, scale indicated on housing. Media:
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HNF10-E Baffle Flow SwitchMechanical flow switch. Spring-loaded baffle triggers microswitch when flow reaches setpoint. SPDT output – 3A at 250VAC – drives pumps, contactors,
Why Choose Us
Our Certificate
Certified to GB/T19001-2016/ISO 9001:2015 Quality System Standard,Meanwhile, the company's products have successively obtained professional certifications such as ATEX, CE, SIL, and others both domestically and internationally.The company attaches great importance to patent application and management, sets patent objectives, and supervises and manages them.
Cutting-Edge Smart Fluid Technology
Honno leads the industry with innovative, intelligent fluid measurement and control solutions. By integrating R&D, production, and sales, we continuously develop high-performance products that improve water efficiency, energy conservation, and environmental management, positioning us as a pioneer in smart industrial technologies.
Global Market Expertise & Compliance
With strong presence in Europe, North America, Asia, and Africa, Honno delivers tailored solutions that meet rigorous international standards such as CE and SIL. Our extensive global experience ensures reliable product performance and seamless market entry, supporting clients across diverse industries with customized, cost-effective solutions.
Comprehensive 24/7 Service & Support
Honno provides a robust end-to-end service system, including pre-sales consultation, rapid mid-sales fulfillment, and proactive after-sales support. Clients benefit from fast response times, remote or on-site guidance, spare parts availability, and lifetime technical assistance, ensuring uninterrupted operations and maximum system efficiency.
Flow Switch Specifications
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Measure range |
Water:3~300cm/s ; Air:200~300cm/s ; Oil:3~300cm/s |
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Accuracy |
±1~±10cm/s |
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Settling time |
3 minutes |
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Pressure |
100Bar |
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Media temperature |
-20 to 80℃ |
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Thread |
G1/2 ,G1/4 ,G1,M18*1.5 |
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Output signal |
PNP / NPN / Relay /4-20mA |
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Power |
24VDC , 110VAC , 220VAC |
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Sensor length |
15mm , 20mm , 30mm , 40mm , 60mm |
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Consumption current |
<80mA |
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Setting |
Button |
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Response time |
2(2-10)s |
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Max.temperature gradient of medium |
300K/min |
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Protect |
Reverse / Short / Overload |
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Protection grade |
Ip67 |
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Power connector |
M12 with 1m cable |
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Material |
Sensor : ANSI316L Body :ANSI316L |
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Load |
Current : 250mA |
High-Quality Brass Construction: Durable and resistant to corrosion.
Wide Temperature Range (-10°C to 85°C): Operates reliably across various environments.
Compact Design: Easy installation and space-saving solution.
Multiple Outputs Available: One or two outputs for flexible configuration.
Low Flow Detection: Accurate sensing for minimal water flow.
Brass Magnetic Paddle Water Flow Switch with Automatic Dry-Run Protection
Type
Baffle Flow Switch
The baffle flow switch is a simple and reliable flow detection device. It sets a movable baffle in the pipeline. When the flow reaches the set value, the baffle will be pushed to trigger the switch action.
Piston flow switch
The piston flow switch uses a piston as a sensitive element. When the flow changes, the piston moves in the pipeline, triggering the switch action. The piston flow switch is suitable for high flow and low viscosity media.
Thermal flow switch
The thermal flow switch works on heat transfer. It determines the flow rate by measuring the heat taken away by the medium when it flows in the pipeline.
Turbine flow switch
The turbine flow switch uses the rotation of the turbine to measure the flow. When the medium flows through the turbine, the turbine rotates. The rotation speed is proportional to the flow.
Fire protection system
Flow switches can control the flow of fire water and quickly extinguish fires. It effectively responds to fires and ensures personnel safety by accurately controlling the flow of firefighting water.
Food and Beverage
Flow switches control the flow of liquids during production. It ensures hygiene and efficiency.
Medical equipment
Flow switches monitor the flow of medical gases. such as liquid medicine and oxygen to ensure safe treatment of patients. Flow switches are commonly used in dialysis machines, infusion pumps, etc.
Water treatment
Flow switches detect water flow. During filtration, backwashing, etc., to ensure water quality. Flow switches monitor the flow of water in real time.
Shipping
Once getting your prepayment,the production will be started immediately.It is about 5-7 working days since payment and we usually deliver by DHL, UPS, FedEx or TNT, Airline and sea shipping also optional.For urgent orders, please contact us to inquire about the stock situation.
Our Services
Professional
We are professional manufacturer of instruments and meters for over 20 years
OEM/ODM
Customized orders are accepted. We will meet all your needs.
Competitive Price
We can supply good quality products with very reasonable price.
Service
12-month warranty; quick response; one-stop purchase.
Certification
FAQ
Hongnuo (shenyang) General Machinery Co., Ltd. is one of the most experienced flow switch manufacturers and suppliers in China, also supports customized service. Please feel free to buy high quality flow switch at competitive price from our factory.
DN25 Flow Switch, micro flow switch, insertion flow switch