Hummel fill/drain cock 1/2", with O-ring, swivel 3/4", union connection: original Hummel spare part, type: Fill/drain cock. Application: Boiler (HRC 23VT voor 10-1999). Manufacturer number: 2705120000; Instalpunt article number: 3654353.
According to the Hummel parts lists, this part fits 1 model: Nefit Fasto (Bosch) HRC 23VT voor 10-1999. The full list is under “Fits”.
This item is in stock and usually arrives within 3–5 working days.
Check the rating plate of your appliance before ordering; if in doubt, ask the manufacturer or your installer. Work on gas-carrying parts must be carried out by a qualified gas engineer.



