Are TXV valves interchangeable?
The TXV determines which refrigerant can be used with a coil. Most new coils can be used with either R22 or R410A providing that the correct TXV is used. You can use the OEM valve for the evaporator coil if it is available or you can use a Parker Universal A/C or heat pump TXV.
How do I choose a TXV valve?
The TXV needs to be selected to match the Btu capacity of the system’s evaporator and compressor. Normally, these valves are rated in tons of refrigeration, so you need to remember that 1 ton of refrigeration equals 12,000 Btuh. pressure drop across the valve.
What is the full name of the TXV valve?
A thermostatic expansion valve (TXV) (see Figure 1) is a refrigeration and air conditioning throttling device that controls the amount of refrigerant liquid injected into a system’s evaporator—based on the evaporator outlet temperature and pressure—called the superheat.
What size Txv do I need?
That means you can find: A TXV for 1.5 to 2 ton systems. A TXV for 2 to 3 ton systems. A TXV for 3.5 to 5 ton systems.
How do I choose a thermal expansion valve?
Important data to take into account when selecting an expansion valve are the nominal cooling capacity, the condensation pressure and the evaporation pressure. If the evaporator is equipped with a distribution device, its approximate pressure drop should also be noted.
How do you adjust a sporlan Txv valve?
To reduce the superheat, turn the adjusting stem counter-clockwise. To increase the superheat, turn the adjusting stem clockwise. When adjusting the valve, make no more than one turn of the stem at a time and observe the change in superheat closely to prevent over-shooting the desired setting.
What size TXV do I need?
How much should a TXV replacement cost?
The cost for replacing the TXV on your AC unit can range anywhere from $800 to $1200. The price for replacing your AC refrigerant filter drier is roughly the same, ranging between $700 to $900.
What is normal head pressure for R-410A?
A normally operating R-410A system with the same condensing temperature of 120 degrees and a 45 degree evaporator saturation temperature will have a high side pressure of 418 psig and a low side pressure of 130 psig.