This Refrigerant HVAC Charging Refilling Safety Valve Adapter is a must-have for anyone who wants to keep their air conditioning system running smoothly. It is designed to work with R-410a refrigerant and R22 models, 1/4? both female and male connecting end making it a versatile tool for a variety of HVAC and refrigeration systems. Its gauge purpose is charging, ensuring that your system has the proper amount of refrigerant to operate at its best. This high-quality adapter is perfect for those in the business and industrial sector who need to maintain their HVAC and refrigeration tools. It is easy to use and can be installed with ease, making it a convenient addition to your toolkit. With this adapter, you can rest assured that your air conditioning system will run smoothly and efficiently.