Optimized 120V performance delivers consistent ignition cycles in high-efficiency furnaces

This model is primarily designed for hydronic cooling and heating systems

Engineered with a proprietary wrapped construction

Engineered for precision system control

Dwyer Instruments A-101 Red Gage Oil 323269-701 Optimized 120V performance delivers consistentAs 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