Parts for your 2013 Nissan Dualis-Tx valve

2013 Nissan Dualis TX‑valve — what it does and how to look after it

Based on technical sources, the 2013 Nissan Dualis (J10) is fitted with a thermostatic expansion valve (TX‑valve). The Nissan Service Manual for J10 (HA — Heating & Air Conditioning) details an “Expansion Valve” mounted at the evaporator, and the Nissan FAST/EPC lists a “VALVE ASSY–EXPANSION” (e.g., 92200‑JD00A/JD01A) for this model. Major aftermarket catalogues (DENSO, Nissens, Four Seasons) also specify a TX‑valve for Dualis/Qashqai J10 with R134a. So, yes — a TX‑valve is relevant and used on the 2013 Dualis.

On this vehicle, the TX‑valve meters liquid R134a into the evaporator based on temperature sensed at the outlet, keeping superheat in the sweet spot. That control boosts cooling at idle, protects the compressor from slugging, and helps maintain consistent vent temps even when the weather swings from crisp mornings to scorching arvos.

It isn’t a routine service item, but it does benefit from sensible A/C servicing habits. When the system is opened (for a condenser, evaporator, or compressor job), technicians typically replace the TX‑valve if there’s any sign of contamination, corrosion, sticking, or impact damage. Symptoms that point to a tired or blocked valve include weak or erratic cooling, frosting at the valve or on the suction line, hissing that never settles, very low suction pressure (starved evaporator) or, conversely, high suction and warm vents (flooding).

• Best‑practice when replacing: renew HNBR O‑rings, add the correct PAG oil type/quantity per the Dualis label or service manual, and replace the receiver‑drier/desiccant (on this model it’s part of or attached to the condenser assembly).
• After reassembly: evacuate properly, leak‑test, and recharge to the factory‑specified mass. Check operation with gauges and confirm stable superheat/subcool readings.
• Access notes: the TX‑valve is a block‑type unit at the evaporator interface (firewall area), with the sensing element integral to the body. Access commonly involves the glovebox/lower trim and the pipe joint at the bulkhead. Follow the J10 HA procedure and torque specs.

During regular servicing, a quick visual for oily residue at the firewall joint, a cabin filter check (airflow matters), and a performance test on a calibrated machine will keep the Dualis air‑con happy. In Australia, work should be carried out by an ARCtick‑licensed technician, in New Zealand, by an approved refrigerant handler.

Popular questions about the 2013 Nissan Dualis TX‑valve

Where is the TX‑valve located on a 2013 Dualis?
It’s a block‑type valve mounted at the evaporator connection on the firewall side of the HVAC case, effectively between the engine bay lines and the cabin evaporator. Access typically involves removing glovebox trim and carefully disconnecting the two A/C pipes at the bulkhead.

Does the Dualis use an orifice tube instead of a TX‑valve?
No. The 2013 Dualis uses a TX‑valve system with a receiver‑drier, not an orifice‑tube/accumulator setup. The TX‑valve actively meters refrigerant to control superheat, which helps stabilise vent temperatures across different driving and ambient conditions.

What does replacement usually cost?
Parts pricing for a TX‑valve is commonly in the $80–$220 AUD/NZD range. With evacuation, re‑gas, and access time (often 1.5–3.0 hours depending on workshop process), total job cost can land roughly between $300 and $700. Exact figures depend on labour rates, brand of parts, and whether the receiver‑drier is renewed at the same time.