ACV 507F4283 sight glass kit (monobloc)

Sight Glass 507F4283 – Genuine ACV Boiler Component. Sight glass 507F4283 enables flame observation in ACV boilers, providing high thermal and impact resistance. Installed on: Prestige 50 Excellence HeatMaster 71 Smart ME 160 Benefits: Durable, heat-resistant material Clear combustion view Safe and reliable design