Ariston 65100695 pressure gauge

An official Ariston part, this pressure gauge is suitable for use in microCombi, microGenus HE, microSystem, T2, ecoSystem, One, ecoCombi, Tristar, microGenus II, Modula, Next and Uno boilers. A pressure gauge gives a visual measurement of the pressure in a system. Ordinarily a leak in your system will show as a consistent pressure drop.