Scully VS-201 00201 Ventalarm Signal 1-1/4" X 1-1/4"

The Scully VS-201 00201 Ventalarm Signal 1-1/4” x 1-1/4” is a vent alarm that is used to monitor tank venting during fuel or oil deliveries in HVAC systems. It operates by producing a whistle sound when air is released during the filling of tank and stops sound when the liquid gets to the vent, meaning that tank is full. It is widely used in oil storage tanks that feed fuel to HVAC equipment, such as boilers and furnaces, to avoid overfills and spills on the ground. The benefits include safe delivery of fuel, less maintenance due to fuel spills, and confirmation of proper fuel levels for continuous operation.