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While it fits a wide range of standard cast iron and condensing units
It features a 1/4" SAE flare equalizer and a 5-foot capillary tube
As a veteran-grade Carrier replacement part
requiring technician verification
Dwyer Instruments A-101 Red Gage Oil R-448A While it fits a wideAs an HVACR veteran, you know that keeping your manometers in calibration isn't just a best practiceit's a requirement for accurate system diagnostics. The Dwyer Instruments A 101 Red Gage Oil is the industry standard fluid specifically formulated for use in inclined manometers and "D" type vertical manometers. With a precise 0. 826 specific gravity, this fluid ensures that your pressure readings are reliable and consistent across the line. This
