E-mail: sale@alvifeng.com
Overview
The WF-YL11-05F welded tubular impeller flow indicator is a full-bore visual monitoring device developed for industrial welded pipelines. Featuring a precision-machined 304/316 stainless steel body, transparent tubular sight window, butt-weld connection, and built-in impeller, it allows clear observation of medium flow conditions directly along the pipe axis. Widely used in water supply, HVAC, chemical processing, food & pharmaceutical, and general industrial systems, it is a key component to prevent system failures such as dry running and flow interruptions.
Key Design & Structure
1. High-Quality Stainless Steel Body
The body is precision-machined from high-quality 304/316 stainless steel with a passivated surface treatment for superior corrosion and wear resistance. It is suitable for water, oil, and weakly corrosive media, with no risk of rust or contamination, meeting hygiene requirements for food and pharmaceutical applications.
2. Transparent Tubular Sight Window with Double Seal
The central section features a high-strength borosilicate glass sight window, paired with food-grade fluororubber O-rings for double sealing. With excellent pressure and temperature resistance, it allows 360° all-round observation of medium flow, impeller rotation, and impurities, eliminating blind spots in pipeline monitoring.
3. Built-In Impeller Indicator System
A green spiral impeller inside the tube rotates as the medium flows, providing clear visual confirmation of flow even at low velocities. The impeller speed also roughly indicates the flow rate, intuitively reflecting the pipeline's operating status.
4. Standard Butt-Weld Connection
Both ends are designed for butt-weld connection to standard industrial pipes, offering high connection strength and excellent sealing performance. Ideal for high-pressure and high-stability industrial pipeline scenarios, significantly improving system reliability.
Core Advantages
• Full-Bore No-Pressure-Loss Design: The straight-through structure maintains the pipe's full bore without additional pressure drop, ensuring no impact on medium delivery efficiency.
• 360° All-Round Observation: The transparent tubular sight window provides an unrestricted view, allowing simultaneous observation of flow status, media color, impurities, and impeller speed for comprehensive monitoring.
• Superior Corrosion Resistance: The combination of a stainless steel body and corrosion-resistant seals ensures long-term resistance to water, oil, and weak acids/alkalis, offering a long service life.
• Sensitive Low-Flow Indication: The spiral impeller responds reliably to low flow rates, preventing false "no-flow" misjudgments.
• High-Stability Welded Connection: The butt-weld connection offers high strength and excellent sealing, suitable for high-pressure and high-vibration conditions with no risk of leakage during long-term operation.
Typical Applications
• HVAC systems: Monitoring chilled and cooling water flow in main pipelines to prevent pump dry-running.
• Water treatment: Visual inspection of circulating water and pure water systems in welded pipelines.
• Chemical and light industry: Monitoring weakly corrosive fluids and oil high-pressure pipelines.
• Food and pharmaceutical industries: Hygienic flow monitoring for clean media pipelines.
• High-pressure industrial systems: Flow status observation in hydraulic and high-pressure pneumatic systems.
Service & Support
All WF-YL11-05F flow indicators undergo strict pressure, sealing, and corrosion resistance tests before leaving the factory. We offer customization for different materials (304/316), sizes, and welding specifications, with full technical support from selection and production to after-sales maintenance.
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