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Ariston Thermostatic Expansion Valve 65159685

Ariston

Ariston Thermostatic Expansion Valve 65159685

Ariston thermostatic expansion valve, part number 65159685, for the NUOS Split External Unit Edition 2.

At a glance

  • Part type: thermostatic expansion valve
  • Also known as 1571945
Manufacturer part no.
65159685
Showing prices

£104.35

£86.96 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Ariston 65159685 is a thermostatic expansion valve used in the NUOS Split external unit. It meters refrigerant flow into the evaporator, regulating the rate of liquid refrigerant entering the coil in response to the superheat at the outlet. Correct operation of the valve is central to the efficiency and reliability of the heat pump circuit.

Signs this part needs replacing

  • Refrigerant superheat drifting outside the expected range at the evaporator outlet
  • Loss of heating capacity or a circuit that struggles to reach temperature
  • Frost or icing forming unevenly across the evaporator coil
  • Hunting or fluctuating suction pressure as the valve fails to hold a stable setting
  • Visible oil staining, corrosion or damage around the valve body and its connections

Before you order

  • Confirm the appliance model and that it is the NUOS Split External Unit Edition 2
  • Check the part number on the existing valve or the unit's documentation against 65159685
  • Verify the fault is at the valve rather than the sensing bulb, capillary or charge
  • Confirm refrigerant handling will be carried out by a competent, qualified engineer

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.