The expansion valve will control superheat at the outlet of the evaporator. It should be selected on the following criteria.
• Balanced port Thermostatic Valves: 35% - 107%
• Non-balanced port Thermostatic Valves: 45% - 100%
• Electric Stepper Valves: 10% - 80%
• Pulse Width Modulation (Sporlan SPW Valves): 50% - 85%
Please see the Detailed Guide at the top left of the page for more information on valve selection and reserve capacity.