ACV 54764021 knob for thermostat, white line

Thermostat Knob – Genuine ACV Temperature Control Part. Thermostat knob is used on the front panel of ACV boilers for manual temperature adjustment. Its ergonomic design provides ease of control. Installed on: Prestige Solo MK1 Smart E 130 HeatMaster 45 TC Benefits of the genuine knob: Precise temperature control Wear-resistant on frequent use Compatible with OEM panel design During maintenance, replace the thermostat only with a genuine knob for reliability and visual consistency.