An AC system has many components: compressor, condenser, receiver dryer, evaporator, and hoses. The compressor, the âheartâ of the carâs air conditioning system works like a pump taking refrigerant, (R-12 in older cars, R-134a in 1995 and newer cars) and pressurizing it, passing it along to the evaporator. The AC compressor has several moving parts (including pistons and valves).
Quick Answer. According to WebMD, a normal blood pressure is lower than 120/80. This means that the systolic number is 120 or lower, and the diastolic number is 80 or lower. The systolic number measures artery pressure when the heart contracts. The diastolic number measures artery pressure between heartbeats.
In the routine outpatient setting, blood pressure is measured indirectly. Thus, it is important that proper techniques be used in order to produce consistent and reliable readings. In adults, a normal blood pressure is less than 120 mm Hg for systolic and less than 80 mm Hg for diastolic blood pressure.Higher levels are classified as prehypertensive: a systolic blood pressure between 120 and 139 mm Hg and a diastolic. . . . Dr. Conlin reports receiving lecture fees from Merck.n the routine outpatient setting, blood pressure is measured indirectly. Thus, it is important that proper techniques be used in order to produce consistent and reliable readings. In adults, a normal blood pressure is less than 120 mm Hg for systolic and less than 80 mm Hg for diastolic blood pressure.