Part Number: 0020221616. This pump head and air vent are designed for the Vaillant Ecotec boiler models. Ideal for replacing a faulty or worn-out part. Vaillant Ecotec Pump Head & Air Vent. Ecotec Plus 612 VU 126/5-5 A R4 2015 Onwards – GC No. 41-044-78.
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