Mark gas combination block sit 820 nova 24 v: original Mark spare part, type: Gas valve. Application: Warm air heating (GNSTE 18). Manufacturer number: 0608040; Instalpunt article number: 8881034.
According to the Mark parts lists, this part fits 23 models, including Mark GNSTE 18, Mark GNSTE 21 and Mark GNSTE 24. 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.



