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Designed to withstand the rigors of continuous operation
allowing for precise flame rectification and signal strength
For technicians performing an HVAC blower motor replacement
It serves as the direct factory replacement for the Lennox 44J23
allowing for multiple viewing angles to confirm flame presence in large combustion chambers
Dwyer Instruments 1221-12-W/M Manometer 323080-701 Designed to withstand the rigorsThe 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
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