Dwyer Instruments A-310A Valve 321702-401 35" outside diameter and a

35" outside diameter and a 1-1/8" fixed bore with a standard keyway

Field failure is common when uninsulated pans sweat or when generic plastics crack due to thermal cycling

60 Hz power supply

Common Questions How do I confirm if the 78M25 valve is stuck

Dwyer Instruments A-310A Valve 321702-401 35" outside diameter and aThe Dwyer Instruments A 310A Valve is a technical essential for any contractor working with low pressure measurement systems. This 3 way vent valve is engineered specifically for permanent installations where Magnehelic gauges or manometers are connected via rigid metal or plastic tubing. In high stakes HVACR environments where periodic zeroing is required without breaking line integrity, the A 310A provides a reliable manual interface. Featuring a 1