The H-type thermal expansion valves for auto air-conditioners are such valves which expand on heat by interiorly temperature sensing and exteriorly balancing. They feature a sensitivity and reliability in temperature sensing, firmness against the pressure dropping-down with the evaporator, vibration resistance, easiness of regulating etc.. Apart from reference to American, Japanese and other international auto standards, our QRFWH serial expansion valves also represent advanced technologies and special characteristics.
