Gateway to Industry

Initial Assessment

Unit 24.1: Expansion Devices

Unit 24.1: Knowledge Checks

Unit 24.2: Thermostatic Expansion Valve

Unit 24.2: Knowledge Checks

Unit 24.3: TXV Components

Unit 24.3: Knowledge Checks

Unit 24.4 - 24.5: The Valve Body and The Diaphragm

Unit 24.4 - 24.5: Knowledge Checks

Unit 24.6 - 24.7: The Needle, Seat, and Spring

Unit 24.6 - 24.7: Knowledge Checks

Unit 24.8 - 24.9: The Sensing Bulb, Transmission Tube, and Bulb Charges

Unit 24.8 - 24.9: Knowledge Checks

Unit 24.10 - 24.11: The Liquid Charge Bulb and Cross Liquid Charge Bulb

Unit 24.10 - 24.11: Knowledge Checks

Unit 24.12 - 24.13: The Vapor (Gas) Charge Bulb and the Cross Vapor Charge Bulb

Unit 24.12 - 24.13: Knowledge Checks

Unit 24.14: Example of a TXV Functioning with an Internal Equalizer

Unit 24.14: Knowledge Checks

Unit 24.15: TXV Functioning with External Equalizers

Unit 24.15: Knowledge Checks

Unit 24.16 - 24.18: TXV Response to Load Changes, Selection of TXV Valves, and the Balanced port TXV

Unit 24.16 - 24.18: Knowledge Checks

Unit 24.19: The Pressure-Limiting TXV

Unit 24.19: Knowledge Checks

Unit 24.20 - 24.21: Servicing the TXV and Installing the Sensing Element

Unit 24.20 - 24.21: Knowledge Checks

Unit 24.22: Step-Motor Expansion Valves

Unit 24.22: Knowledge Checks

Unit 24.23: Algorithms and PID Controllers

Unit 24.23: Knowledge Checks

Unit 24.24 - 24.26: The Automatic Expansion Valve and Special Considerations for the TXV and AXV

Unit 24.24 - 24.26: Knowledge Checks

Unit 24.27: The Capillary Tube Metering Device

Unit 24.27: Knowledge Checks

Unit 24.28: Operating Charge for the Capillary Tube System

Unit 24.28: Knowledge Checks

Test