Description
The Scully 00274 21-3/4″ Ventalarm VS-523 is a vent-line warning component used on liquid storage tanks to signal when the tank reaches its upper fill level during fuelling. It produces an audible tone through the vent system while the tank is being filled and stops sounding once the liquid reaches the designated level, indicating a full condition in HVAC systems. It is commonly used on fuel storage tanks that supply boilers or heating equipment, where it supports to avoid overfill incidents during delivery. This system supports safe tank operation by providing a simple mechanical system without requiring electrical power.
