The accuracy of airflow sensors typically found in terminal units can be negatively impacted by the buildup of airborne lint creating potential pressure relationship issues.  Price Exhaust Venturi Valves (VV) control flow based on factory calibration and characterization without the use of flow sensors, leaving them unaffected by particulates in the airstream.

Venturi Valves (VV) are mechanically pressure independent control valves designed specifically for room pressure control applications. The highly engineered internal cone assembly ensures the valve will respond to changes in duct static pressure in less than one second, while turndown ratios in excess of 16:1 serve to maximize energy savings in unoccupied or minimum flow set-points.

• Low Pressure (0.3-3.0” W.C.) and Medium Pressure (0.6-3.0” W.C.)
• Horizontal and Vertical Orientation
• Shut Off Options
• Integrated Assembly Options: Packless Stainless Steel or Galvanized Silencer