Cleveland Controls PVG-1 Pressure Vacuum Generator has an output range of ±0.10 to ±12.0" W.C.  It requires 3 AA Batteries that have an operating time of a minimum of 10 Hours. 

The PVG-1 is easy to set-up and has a durable cover for protection. It provides a constant air source ideal for field calibrating differential pressure air flow sensing switches.  The generator has separate coarse adjustment valves for initial pressure or vacuum range selection, a fine-tune output adjustment potentiometer, and a pushbutton on/off switch.

Features:

• Durable protective case
• Includes slip-on tubing connections that accept both 1/8" ID and 1/4" ID flexible tubing
• Includes a tubing accessory kit for air switch and Model 6650 manometer connection.
• Contains individual integral bleed valves for both positive and negative air flows.
• Generates both positive and negative airflow for use when testing air switches in both conditions