Tap complete or Insert complete
Some units are inserted into a Hydraulic block and others include the Body with connections. Check photos to identify which Assembly you need; the color of the Control knob alone does not prove equivalence.

Filling tap Vaillant VMW ES 21/245/4-5 R3 reconditioned. Filling tap with Body brass, Control knob white, side socket and threaded output. Compare the coupling, threads and drive shape to the installed Tap.
Compare the shape of the Body, its connections and the Control knob with the withdrawn Tap. The orientation of the Ports helps to distinguish similar-looking versions.
Compare the views from the same angle and check the complete identification of the removed part.
Choose a photo of your part to view it beside this unit. Compare the labels, connectors and mounting points from the same angle.
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Application listed in the catalogue: Vaillant VMW ES 21/245/4-5 R3. The variant and configuration must match the installed equipment; this does not establish compatibility with other models.
No models are documented for that search.
Application taken from the catalogue, pending comparison with the installed variant. This does not constitute compatibility certified against an exploded diagram.
Some units are inserted into a Hydraulic block and others include the Body with connections. Check photos to identify which Assembly you need; the color of the Control knob alone does not prove equivalence.
We repair boilers in Madrid and the surrounding areas. Installation is arranged separately from the purchase of the part.
Filling tap with Body brass, Control knob white, side socket and threaded output. Compare these details with the removed Part and its complete identification.
Compare the shape of the Body, its connections and the Control knob with the withdrawn Tap. The orientation of the Ports helps to distinguish similar-looking versions. Compare views from the same angle and complete identification of the withdrawn Part.
This product page identifies the catalogued application Vaillant VMW ES 21/245/4-5 R3. It does not establish equivalence with other versions; service documentation linking Part to the specific model is required to extend compatibility.