Les vannes couramment utilisées dans les systèmes de réfrigération sont : robinet à soupape, papillon des gaz, soupape de sécurité, manomètre, clapet anti-retour, indicateur de niveau de liquide.
Before adjusting thermostatic expansion valve, must confirm that the equipment refrigeration abnormal is caused by the thermostatic expansion valve deviation from the optimal operating point, but not because of less freon, dry filter plug, filter, fan and other reasons caused by.