1. Reliable operation under low pressure difference, with low pressure drop and internal leakage 2. The electromagnetic coil is made of thermosetting plastic, water resistant, lightning resistant and excellent insulation performance. 3. More energy saving, low temperature rise, low noise and good anti-vibration performance 4. Excellent sealing performance, high energy efficiency, light weight, good vibration resistance and environmental protection 5. It is used in heat pump type systems such as central, unit and room air conditioners to convert the refrigeration system and heating system by switching the refrigerant flow path. Specification: Features: Reliable operation under low pressure difference, with low pressure drop and internal leakage. The electromagnetic coil is made of thermosetting plastic, water resistant, lightning resistant and with excellent insulation performance. More energy saving, low temperature rise, low noise and good anti-vibration performance. Excellent sealing performance, high energy efficiency, light weight, good vibration resistance and environmental protection. It is used in heat pump type systems such as central, room and room air conditioners to convert the refrigeration system and the heating system by switching the refrigerant flow path. Specification: Condition: New. Material: Copper Use: From 1 to 120 tons of refrigeration, a wide range of use Applicable refrigerant: R22, R407C, R404A, R410A, etc. Applicable average temperature: -30 ~ +120 Applicable ambient temperature: -25 ~ +70 Relative humidity: 95% RH or less Certifications: UL, VDE, PED Type: 1P, 1.5P-2P (optional) Package list: 1 * air conditioning four-way valve Note: 1. Before replacing the four-way valve, use a plastic plug to block the four nozzles to prevent impurities from entering the four-way valve. Before welding, check the position of the slider of the four-way valve inside the main body of the four-way valve, which should be on the left when it is normal. If you are in the middle or right, tap the valve body and drag the slider to the left. 2. The priority valve coil should be removed before desoldering the four-way valve to avoid burning the coil during the soldering process. 3. Before desoldering the four-way valve, the four-way valve should be wrapped with a damp cloth and the four-way valve assembly should be soldered. Pay attention to the direction of the flame when welding and do not let the flame heat the valve body. 4. Immerse the four-way valve in water to replace it. In order to control the relative angle between four-way valve assembly lines, a method of removing one and then welding one can be adopted. 5. When installing the four-way valve assembly, the four-way valve should be wrapped with a damp cloth and the direction of the welding flame should be noted, and the flame should not be heated against the valve body. 6. When replacing the four-way valve, in order to ensure the welding quality of the copper pipe, silver-containing brazing filler metal should be used as much as possible. If there is no silver-containing brazing filler metal, copper-phosphorus brazing filler metal and flux can be used for soldering. 7. If possible, protection against nitrogen filling should be taken during welding to reduce the formation of oxide skin. After welding is completed, the oxide skin inside the four-way valve is purged with nitrogen. When cooling, care must be taken to avoid humidity.