汽車R134a冷媒充填量判斷表室外溫度低壓側壓力18 25-35psi 21 35-40psi 24 35-45psi 27 ... R22, R134a, R404a, R407c: 低壓錶-30inHg~0~250psi & -76cmHg~0~15kg/cm2.
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