Allegro Flow Meter with O Adapter, 0‐20 LPm (9804-03A)
Allegro 9804-03A Flow Meter with O Adapter, 0‐20 LPM is designed for accurate airflow measurement in industrial and confined space ventilation systems. This flow meter features a measurement range of 0 to 20 liters per minute and includes an O-style adapter for easy connection to sampling equipment or calibration systems. Built for precision and reliability, it supports proper air monitoring and system validation during respiratory protection operations.
Measures airflow from 0 to 20 liters per minute (LPM)
Includes O adapter for secure equipment connection
Designed for calibration and air sampling validation
Lightweight and easy to use in the field
Made in the USA for dependable performance
Ensures accurate monitoring of air flow levels
Supports compliance with safety and calibration protocols
Compatible with Allegro air sampling and testing systems
Reduces setup time with quick-connect adapter
Durable design for long-term field use
Technical Specifications:
Type: Flow Meter with O Adapter
Measurement Range: 0–20 LPM (liters per minute)
Application: Airflow measurement, calibration, industrial safety
Included Adapter: O-style connector
Country of Origin: USA
Product identification
- Brand: Allegro
- Model / MPN: 9804-03A




