Tank Fill Alarms Are Used For Commercial, Industrial Or Residential Fuel Storage Applications.
Tank Fill Alarms are made of solid cast iron with corrosion-resistant finish for long lasting durability and dependability. Designed to whistle while tank is being filled and to stop whistling when oil has reached safe capacity. 5 to 10 decibels louder than other models. Fit most popular above-ground and in-ground tanks. Available in 1-1/4, 1-1/2, and 2 inch male and female NPT thread sizes with 5-1/4, 9-3/4 and 21-7/8 inch length stems.