Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Vaillant Expansion Valve Thermostatic 10-14 kW 0020031978

Vaillant

Vaillant Expansion Valve Thermostatic 10-14 kW 0020031978

Vaillant thermostatic expansion valve, part 0020031978, rated for 10-14 kW applications.

At a glance

  • Also known as 1383855
Manufacturer part no.
0020031978
Showing prices

£288.97

£240.81 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 Vaillant 0020031978 is a thermostatic expansion valve rated for 10-14 kW applications. The thermostatic expansion valve is the metering component in the refrigeration circuit, controlling the flow of refrigerant as it enters the evaporator. This valve is supplied as a service component identified by the manufacturer part number 0020031978.

Before you order

  • Check the part number 0020031978 against the component currently fitted or against the appliance documentation.
  • Confirm the 10-14 kW rating band is correct for the appliance the valve is going onto.
  • Work on the refrigeration circuit requires refrigerant recovery, evacuation and recharge, so plan for a competent engineer and the correct equipment before starting.

Not sure which part?

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