Parts for your 2022 Ford Transit-Tx valve

2022 Ford Transit TX Valve — what it does and how to look after it

Yes, the 2022 Ford Transit uses a TX valve (thermal expansion valve) in its air‑conditioning system. Ford’s Workshop Manual (Transit, Section 412‑00 Climate Control) lists a front A/C evaporator expansion valve, and models with rear air have a second rear TX valve. Ford’s parts catalogue for 2015–2023 Transit also shows an A/C expansion valve (commonly referenced as an “A/C evaporator expansion valve”, with applicable OEM and aftermarket listings). So the TX valve is absolutely relevant on this model.

On the Transit, the TX valve meters refrigerant into the evaporator based on temperature and pressure, keeping the superheat in the sweet spot. The result is steady, cold air at the vents without icing the core. When a TX valve sticks or goes out of calibration, the van can blow warm one minute and frosty the next, or the lines near the firewall may frost up and hiss.

As part of servicing, the TX valve itself isn’t a routine replacement item. Instead, technicians check system performance, vent temperatures, high/low side pressures and look for dye or oil traces at the valve block and fittings. If contamination, moisture ingress or debris is found (for example after a failed compressor), the TX valve is commonly replaced along with the receiver/drier or desiccant bag, then the system is thoroughly flushed where appropriate.

When it’s time to replace the valve on a 2022 Transit, proper A/C procedure matters:

• Recover the R‑1234yf refrigerant with an approved machine — it’s mildly flammable and mustn’t be vented.
• Replace all disturbed O‑rings, lubricated with the correct PAG oil specified for 1234yf systems.
• If the system’s been opened, renew the receiver/drier or desiccant pack.
• Evacuate for the recommended time to remove moisture, then weigh in the exact refrigerant charge shown on the under‑bonnet label.
• Leak‑test and verify stable pressures and vent temps. Recalibrate climate controls if the workshop manual calls for it.

Common signs a Transit TX valve needs attention include inconsistent cabin temps, poor cooling at idle, unusually high or low gauge readings, or visible frost at the valve block. Keeping the cabin filter fresh and the condenser clean helps the TX valve do its job, especially in Aussie and Kiwi summers when the A/C cops a workout. If the van has rear air, remember there may be two TX valves — front and rear — and both circuits should be assessed together.

Popular questions

Does the 2022 Ford Transit use a TX valve or an orifice tube?
It uses a thermal expansion valve at the evaporator. Vans optioned with rear air have a second TX valve for the rear evaporator. Ford documentation and parts listings for 2015–2023 Transit specify expansion valves rather than a fixed orifice tube.

When should the TX valve be replaced on a 2022 Transit?
There’s no fixed kilometre interval. It’s replaced when performance testing points to a metering fault, or whenever the system has internal contamination (e.g., after a compressor failure). Any time the circuit is opened, new O‑rings and a fresh receiver/drier are recommended.

What refrigerant and oil does it use, and how much?
The 2022 Transit runs R‑1234yf with the correct PAG oil for yf systems. The exact charge weight varies by engine and whether the van has rear A/C, so always follow the under‑bonnet label and the Ford Workshop Manual. Refrigerant should be weighed in precisely — don’t guess.