Used in jet pump water systems. Maintains proper charge in conventional tanks. Prolongs pump life by reducing frequency of cycling. No. AV-45:  80 Maximum Tank Gallons, 1/4'' FIP. No. AV-100: 100 Maximum Tank Gallons, 3/8'' FIP. 42 Maximum Tank Gallons, 1/4'' FIP.

Used in jet pump water systems. Maintains proper charge in conventional tanks. Prolongs pump life by reducing frequency of cycling. No. AV-45:  80 Maximum Tank Gallons, 1/4'' FIP. No. AV-100: 100 Maximum Tank Gallons, 3/8'' FIP. 42 Maximum Tank Gallons, 1/4'' FIP.

Air volume control for standard air-over-qater tanks. Use with submersible pump.

Includes: 1/4" compression fitting for plastic tube, nipple, air volume control and instruction sheet.