ACV pressure relief valve 4bar 3/4": original ACV spare part, type: Pressure relief valve. Application: Boiler (E-Tech P 201-259). Manufacturer number: 557A1057; Instalpunt article number: 8701257.
According to the ACV parts lists, this part fits 2 models, including ACV E-Tech P 57-115-144 and ACV E-Tech P 201-259. The full list is under “Fits”.
Special-order item: it is ordered specially for you from the manufacturer. Specially ordered items can in principle not be returned. Please check the type plate of your appliance and the part number before ordering.
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.


