Field-adjustable through internal DIP switches

it typically requires a minimum pressure drop (usually around 5 PSI) to lift the piston and maintain an open position

ensuring a proper reach within the combustion chamber of 40

this assembly is strictly for chilled or hot water and glycol mixtures

This assembly is designed for external mounting

Dwyer Instruments A-489 Mounting Flange 326070-701 Field-adjustable through internal DIP switchesThe Dwyer A 489 Mounting Flange is a critical installation accessory designed for securing static pressure tips and sensors within HVAC ductwork. Engineered for durability and precision, this flange ensures a stable, leak proof mounting point for 4 inch straight static pressure sensors, allowing for accurate readings in high velocity airflow environments. Constructed from high grade materials, the A 489 is built to withstand industrial conditions,