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Rossonix Co., limited, established in 2011 with over a decade of experience in fluid control solutions, proudly presents the AUTO FLOW Flow Switch AFS-1. This industrial-grade pipeline flow control switch is designed to provide reliable fluid protection in demanding environments. With an annual export value exceeding US$5 million and serving markets across North America, Europe, and Asia, our expertise ensures that the AFS-1 meets the highest standards of durability and precision. Whether you need to monitor coolant flow, protect pumps, or control process lines, this switch offers a cost-effective, easy-to-install solution.
The AFS-1 is a robust flow switch that utilizes a piston or paddle mechanism to detect the presence or absence of flow in a pipeline. It is engineered for long service life and consistent performance, even in harsh industrial conditions. Below, we detail its key features, technical specifications, and the direct benefits it brings to your operations.
Key Features & Benefits
Reliable Fluid Protection: The AFS-1 instantly detects flow failure or reduction, triggering an alarm or shutdown to prevent damage to pumps, heat exchangers, and other equipment. This protects your assets and reduces downtime.
Wide Application Range: Suitable for water, oils, coolants, chemicals, and many other non-aggressive liquids. The switch can be used in HVAC, irrigation, water treatment, and industrial process lines.
Adjustable Flow Set Point: The switching point is easily adjustable via a screw on the housing, allowing you to fine-tune the activation threshold for different flow rates. This flexibility ensures optimal performance across various system conditions.
Durable Construction: Available in stainless steel or brass body with corrosion-resistant internal components. The switch is built to withstand pressure up to 10 bar and temperatures from -20°C to +120°C, making it suitable for demanding environments.
Simple Installation: Compact design with standard threaded connections (1/2" to 2" NPT or BSP). The switch can be installed in any orientation, though vertical installation with flow upward is recommended for best accuracy.
SPDT Relay Output: Provides a clean signal for integration with PLCs, alarm systems, or direct control of pumps. The normally open (NO) and normally closed (NC) contacts give you flexibility in wiring.
Low Maintenance: No moving parts exposed to fluid wear (paddle design). The switch requires minimal maintenance over its lifetime, reducing operational costs.
Technical Specifications
| Model | AFS-1 |
| Pipe Connection Size | 1/2", 3/4", 1", 1-1/4", 1-1/2", 2" (adaptable) |
| Maximum Working Pressure | 10 bar (145 psi) |
| Fluid Temperature Range | -20°C to +120°C |
| Flow Rate Range (Adjustable) | 0.5 to 30 L/min (depending on pipe size) |
| Output Contact | SPDT (single pole double throw), rating: 5A @ 250VAC |
| Power Supply | AC 220V or DC 24V (other voltages available on request) |
| Protection Degree | IP65 (dust-tight and protected against water jets) |
| Body Material | Stainless Steel 304 / Brass (optional) |
| Wetted Parts | Stainless steel, brass, NBR/FKM seals |
How It Works
The AFS-1 operates on a simple mechanical principle: as fluid flows through the pipeline, it moves a paddle or piston inside the switch. When the flow rate exceeds the adjustable set point, the actuating mechanism triggers the SPDT relay. When flow drops below the set point (or stops), the switch returns to its original state, sending a signal to your control system. This allows you to monitor flow conditions continuously and take immediate action in case of abnormal flow, such as pump dry-run protection, filter blockage detection, or coolant flow failure.
Trust & Quality Assurance
Rossonix Co., limited has been delivering reliable flow control solutions since 2011. We are a dedicated trading company with an overseas office and a strong presence in global markets, shipping from ports in Shenzhen, Hong Kong, and Europe. Our company is certified under ISO9001 and ISO9000, reflecting our commitment to quality management and continuous improvement. With an annual export value of US$5-10 million and a team of 11-50 experienced professionals, we ensure that every AFS-1 flow switch meets rigorous quality standards before leaving our warehouse.
We understand the importance of reliable fluid protection in industrial processes. That's why we offer comprehensive support, including technical documentation, installation guidance, and after-sales service. Our main markets include North America, South America, Europe, Oceania, the Middle East, and Asia, and we have a proven track record of satisfying customers worldwide.
Invest in the AUTO FLOW AFS-1 flow switch today to enhance the safety and efficiency of your pipeline systems. Contact us for a quote or sample request – our team is ready to assist you with custom specifications and bulk orders.
Frequently Asked Questions (FAQ)
What is the difference between the AFS-1 and other flow switches?
The AFS-1 features a robust adjustable flow set point, high pressure rating up to 10 bar, and IP65 protection, making it suitable for industrial environments. Its compact design simplifies installation.Can the AFS-1 be used with aggressive chemicals?
It is designed for non-aggressive fluids. For aggressive chemicals, we recommend using the stainless steel body with appropriate seals (FKM). Please consult us for specific chemical compatibility.What is the default power supply voltage?
The standard version is AC 220V, but we can also supply DC 24V or other voltages upon request. Please specify your requirement when ordering.How do I adjust the flow set point?
Locate the adjustment screw on top of the switch housing. Use a screwdriver to rotate it clockwise to increase the set point (requires higher flow to activate) or counterclockwise to decrease it. A test run is recommended after adjustment.Is the AFS-1 suitable for horizontal pipe installation?
Yes, the switch can be installed in any orientation. However, for optimal accuracy, we recommend vertical installation with flow upward. If horizontal installation is required, ensure the paddle is correctly oriented.What is the warranty period?
Our standard warranty is 12 months from the date of shipment against manufacturing defects. Extended warranty options are available upon request.Do you provide a sample for testing?
Yes, we can provide samples for evaluation. Please contact our sales team with your pipe size and flow requirements, and we will arrange a sample shipment.How long does delivery take?
For standard models, delivery typically takes 7-15 days after order confirmation. Custom orders may require additional time. We ship from Shenzhen or Hong Kong ports.
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