🔧 Enhance Accuracy with Yellow Jacket 40332 Blue Compound Gauge and 19110 Quick Coupler Review

Use this quick connect sensor to periodically check the refrigerant level in your air conditioning system. Avoid coolant loss with long hoses.

As always, no problem with Yellow Jacket products. Having worked in HVAC&R, DDC, Pneumatics etc. for over 30 years, I only use a trusted name in these commercial, industrial and residential real estate transactions.

This gauge arrived today. Not _quite_ as shown in the description. The gap between the blue and green scales is below zero PSIG, and this is as close to 0 as the gauge can be calibrated. To determine the superheat value, this difference is enough to make it almost useless. It's a great gauge and the short sleeve is incredibly handy for checking the pressure on an air conditioner with a critical load, as close to leaking refrigerant as it gets. But the sensor error is simply unacceptable. Sorry,