Description: Material: Made from copper, this air conditioner four-way valve is lightweight yet sturdy, ensure long term use Reliable Performance: This four-way reversing valve use efficiently under low pressure differentials, ensuring minimal pressure drop and internal leakage Easy Installation: This air conditioning four-way reversing valve is compact enough to fit seamlessly into your existing air conditioning system. Suitable for residential or commercial HVAC systems Feature: Engineered for energy savings with low temperature rise and noise levels, this valve also boasts great vibration resistance for stable performance in various conditions Multifunction: It is designed for use in central, unit, and room air conditioning systems to switch between cooling and heating modes by altering the refrigerant flow path Specification: Material: Copper     Size Chart: 1P Inner Diameter: 0.8cm/0.31inch, 0.952cm/0.37inch 1.5P-2P Inner Diameter: 0.952cm/0.37inch, 1.27cm/0.50inch 3P Inner Diameter: 0.952cm/0.37inch, 1.588cm/0.63inch 5P Inner Diameter: 1.27cm/0.50inch, 1.905cm/0.75inch Package Includes: 1 Piece Air Conditioner Four-way Valve Note: Please allow slightly errors due to manual measurement and different monitors.