Equalization of pressure in a capillary tube?

 When the refrigeration system using the capillary tube is switched off, the pressure throughout the system tends to equalize because the capillary tube does not block the passage of refrigerant between the condenser (high pressure side) and the evaporator (low pressure side ). This means that when the system is switched back on, the compressor faces a practically identical pressure condition between suction and discharge. This requires the compressor to have a low starting torque and, consequently, less powerful, smaller, lighter and more economical electric motors. The thermostatic expansion valve does not allow the equalization of the system, which requires a high starting torque of the compressor.