By accurately monitoring and modulating fluid velocity

it fits efficiently into control panels where space is at a premium

making it an essential Trane replacement part for restoring factory-spec airflow and efficiency

Operating at 120 VAC with a built-in 45-second delay

Precision Balancing: Factory balancing reduces vibration and motor stress

Dwyer Instruments 1221-12-W/M Manometer 320734-701 By accurately monitoring and modulatingThe Dwyer Instruments 1221 12 W M Manometer is a field proven Flex Tube U Tube Manometer designed for the high precision pressure diagnostics required in heavy duty HVACR environments. This differential pressure gauge features a 12 inch water column range (6 0 6" w. c.), making it ideal for determining duct static pressure, filter resistance, and fan efficiency. Constructed with 0. 375" O. D. clear butyrate tubing, the columns are specifically