Tank Level & Alarm Gauges – Ventalarm®
The Original Combination Whistle Alarm & Level Indicator One-unit ...

Takes clean, dry fuel from 1” below the surface
Ends ice and sludge clogged fuel lines; pays for itself when just one service call is eliminated
Ideal for mobile homes and other low burner firing rates
Provides a return line opening.
Two-piece assembly makes installation easier.
One unit fits both 1 1/2″ and 2″ tank openings.