The TE-1003-6 Flow Venturi Calibration Valve is a precision flow control component designed for Tisch Environmental high volume air sampling systems. This valve integrates with the "flow venturi calibration valve system" to provide accurate flow measurement and control in EPA-compliant ambient air monitoring applications.
Technical Operation
The venturi valve operates on differential pressure principles, utilizing a precision-machined venturi throat to generate a pressure drop proportional to airflow rate. The system "utilizes a precision-machined venturi to generate a differential pressure proportional to the flow rate that is not affected by temperature variations or humidity." This design ensures consistent flow measurement accuracy regardless of environmental conditions during field sampling operations.
System Compatibility
The TE-1003-6 is designed as a component of Tisch Environmental's comprehensive flow calibration system. It works in conjunction with related components including the TE-1003 complete Flow Venturi and Calibration Valve assembly and the TE-1003-4 Flow Venturi for PUF Sampler applications. High volume PUF air samplers utilize this "flow venturi calibration valve system" along with "0-100" magnehelic gage" for complete flow monitoring and control.
Applications
This calibration valve is essential for EPA Method TO-13A compliance in semi-volatile organic compound sampling using polyurethane foam (PUF) collection media. Tisch Environmental systems support "EPA Method TO-4A, EPA Method TO-9A, EPA Method TO-13A" for ambient air quality monitoring. The valve enables precise flow control necessary for maintaining consistent sampling rates during extended monitoring periods, ensuring data quality and regulatory compliance.
Installation and Maintenance
The TE-1003-6 integrates into existing Tisch Environmental high volume sampling systems and requires periodic calibration as part of routine maintenance protocols. "It is recommended by the EPA that each calibrator should be re-calibrated annually" to maintain measurement accuracy and regulatory compliance. The valve should be inspected for proper operation during routine sampler maintenance and replaced if flow control precision degrades.