Parts for your 2007 Ford Transit-Tx valve

2007 Ford Transit TX-Valve: What It Does and When to Service It

Technical references confirm the 2007 Ford Transit (Mk7, V347/V348) is fitted with a thermostatic expansion valve (TXV) on the front A/C system. This is documented in the Ford Workshop Manual (Section 412-00 Climate Control), Ford/Motorcraft parts listings for the A/C expansion valve (e.g., 6C11-19D734 variants), and major climate-control catalogues from Hella/Behr, Denso, and NRF covering Transit 2006–2013. Some vehicles with auxiliary rear air may also use an additional metering device, but the primary cabin system uses a TXV rather than an orifice tube.

On a 2007 Ford Transit, the TX valve is the little metering brain of the air-con circuit. Sitting at the evaporator inlet (bulkhead/evaporator block), it constantly trims refrigerant flow based on evaporator outlet temperature so the core runs cool without icing. That keeps vent temps consistent in Aussie heat or a brisk Kiwi winter’s day, and helps the compressor work efficiently at idle and on the highway.

It’s not a routine service item, but it’s central to reliable cooling. When the system’s opened up for any reason—condenser or compressor replacement, leak repair, or contamination—the valve deserves attention. Signs the TXV may be struggling include weak cooling at idle, erratic vent temperatures, evaporator icing, high-low pressure imbalance, or frost/oil staining at the expansion block. A stuck-open valve can flood the evaporator, stuck-closed starves it, both hurting comfort and compressor longevity.

Good practice on a Transit includes:

• Replacing the receiver-drier/desiccant pack whenever the system is opened.
• Fitting new HNBR O-rings and lightly oiling them with the correct PAG oil specified for the fitted compressor.
• Thoroughly flushing lines after a compressor failure to prevent debris from jamming the new valve.
• Evacuating with a quality vacuum pump and holding vacuum before charging to the specified R134a mass on the under-bonnet label.
• Leak testing and confirming correct superheat/pressure behaviour after charging.

Typical replacement access is via the glovebox/evaporator housing area. After legally recovering refrigerant (ARCtick-licensed in AU or Approved Filler in NZ), the tech removes the expansion block fasteners, swaps the valve, renews seals, reassembles, evacuates, and recharges. Orientation matters—ensure the inlet/outlet are correct and any insulators are refitted so the sensing element reads true evaporator outlet temp.

For owners, the best “maintenance” is keeping the condenser clean, running the A/C regularly to circulate oil, and fixing small leaks early. A healthy TXV helps the Transit cool quickly, cycle smoothly, and protect the compressor over big kilometres.

Popular questions about 2007 Ford Transit TX valves

Where is the TX valve located on a 2007 Transit?
It’s mounted at the evaporator inlet, typically at the firewall/bulkhead connection inside the HVAC case behind the glovebox area. The aluminium block joins the two refrigerant lines entering the cabin. Access usually requires glovebox and trim removal and, on some variants, partial HVAC case access.

Do all 2007 Transits use a TX valve, not an orifice tube?
Yes for the primary front A/C system—Ford documentation and parts catalogues list a block-type TXV for 2006–2013 Transits. Vans with optional rear A/C may include a second metering device for the rear circuit, which can vary by kit supplier, but the main cabin system is TXV-based.

When should the TX valve be replaced?
It’s replaced when there’s clear fault evidence (pressure readings off-spec, icing, contamination) or any time the system has suffered compressor failure or severe moisture ingress. Many workshops also replace it proactively during major A/C overhauls, along with the drier, to protect the new compressor and stabilise performance.