Honeywell V4043H 1056 - 2 Port Motorised Zone Valve 22mm V4043H1056 (272848) Diverter Valve Microswitch ✅ Product Features:✔️ Genuine Vaillant

✅ Product Features:✔️ Genuine Vaillant spare part✔️ Part Numbers: 0020018138 / 050577✔️ Air pressure switch (APS)✔️ OEM quality replacement component✔️ Monitors fan airflow and flue performance✔️ Ensures safe ignition sequence✔️ Reliable and durable construction✔️ Ideal for servicing and boiler repairs

BAXI DUOTEC 28HE A BEFORE CAC0929

Vaillant ecoTEC PLUS 837 R1

or flow meter

Honeywell V4043H 1056 - 2 Port Motorised Zone Valve 22mm V4043H1056 (272848) Diverter Valve Microswitch ✅ Product Features:✔️ Genuine VaillantHoneywell V4043H 1056 2 Port Motorised Zone Valve 22mm V4043H1056 (272848). Condition is "New". Dispatched with Royal Mail 2nd Class.