vaso expansion caldera vaillant 181022 ranco 91490820600 FWG7121K

91490820600 FWG7121K

Pasador de bloqueo roto o sin recuperación

FI 7 874 SP IX A 859991021580

The 262900074 heating element is the original replacement circular heating element (100W

WL10 A (up to approx

vaso expansion caldera vaillant 181022 ranco 91490820600 FWG7121KThe expansion vessel is a fundamental component in Vaillant boilers that allows absorption of pressure variations caused by the expansion of water when heated. This model, with a 12 liter capacity and quick connection, ensures the proper functioning of the hydraulic system, preventing damage to the boiler and leaks. What problem does this replacement part solve? Unstable pressure in the boiler causing the pressure switch to trip. Water loss due to