In this video we cover how the TXV bypasses in the heat pump cycle.
We cover internal and external check valves plus the bi-flow Txv that meters in either direction.

Special thanks to JD Kelly @ Student_of_HVAC for these graphics!

We do not cover how the normal operation of the TXV as that has been discussed previously here:


HVAC 060 Introduction to TXV
   • HVAC 060 Introduction to the TXV TEV  

HVAC 090 deeper view of the txv
   • HVAC 090 TXV a deeper view of the The...  

Many more TXV resources here!

Sporlan Training online http://sporlantraining.com/?lang=en_us

Danfoss TXV training online
https://www.danfoss.com/en-us/product...

Emerson TXV
https://climate.emerson.com/en-us/sho...

HVAC school TXV content
https://hvacrschool.com/?s=TXV

AC Service tech, Craig has a ton of great TXV content and videos
https://www.acservicetech.com/search-...

Engineering mindset TXV are great
https://theengineeringmindset.com/ins...
Engineering mindset TXV video
   • How TXV works - Thermostatic expansio...  

Engineering mindset TXV inside Video
   • What's inside a Thermal Expansion Val...  

HVACR Videos TXV
   • DON'T ADJUST A TXV WITHOUT CHECKING T...  

HVACR videos he has so many great TXV diagnostics videos
   • Vapor and TXV's dont work well together  

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Heat pumps typically have 2 metering devices but only 1 is used at a time.
in this video we discuss how TXV bypass when not in use. we also discuss how a single TXV can be used to meter in either direction.
Thermostatic Expansion Valve tires to control Superheat and work very well in Heat Pump operation for air conditioning or heating.