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![Dual Point Hydrostatic Sensors For Brine-Filled Double-Wall Tanks Dual Point Hydrostatic Sensors For Brine-Filled Double-Wall Tanks](https://shop.sourcena.com/lowres/detail/794380-303.jpg)
Dual Point Hydrostatic Sensors For Brine-Filled Double-Wall Tanks
Item No. 794380-303
Used On TLS-350 and TLS-450
![Check Valve With Housing Check Valve With Housing](https://shop.sourcena.com/lowres/detail/410152-001.jpg)
Check Valve With Housing
Item No. 410152-001
4 Inch Red Jacket STP and variable speed replacement part
![3 Inch Overfill Prevention Valve Evr Approved With 3 Inch Female Threaded X 6 Inch Female Threaded Connection 3 Inch Overfill Prevention Valve Evr Approved With 3 Inch Female Threaded X 6 Inch Female Threaded Connection](https://shop.sourcena.com/lowres/detail/9095AA3300AVEVR.jpg)
3 Inch Overfill Prevention Valve Evr Approved With 3 Inch Female Threaded X 6 Inch Female Threaded Connection
Item No. 9095AA3300AVEVR
Installed at the fill port of an aboveground storage tank
![4 inch 71SO Series CARB EVR Certified Vaportight OPV Overfill Prevention Valve For Up To 10 Foot Diameter Tank With 10 Foot Burial 4 inch 71SO Series CARB EVR Certified Vaportight OPV Overfill Prevention Valve For Up To 10 Foot Diameter Tank With 10 Foot Burial](https://shop.sourcena.com/lowres/detail/71SO-410C.jpg)
4 inch 71SO Series CARB EVR Certified Vaportight OPV Overfill Prevention Valve For Up To 10 Foot Diameter Tank With 10 Foot Burial
Item No. 71SO-410C
The OPW 71SO Overfill Prevention Valve is a 2-Point Shut-off Valve designed to prevent the overfill of Underground Storage Tanks by providing a positive shut-off of product delivery. When the liquid level rises to about 95 Percent of tank capacity, the valve automatically slows flow. If the delivery is not stopped and liquid rises to about 98 Percent of tank capacity, the valve closes completely and liquid cannot flow.
![4 inch 71SO Series CARB EVR Certified Vaportight Testable OPV Overfill Prevention Valve For Up To 10 Foot Diameter Tank With 10 Foot Burial 4 inch 71SO Series CARB EVR Certified Vaportight Testable OPV Overfill Prevention Valve For Up To 10 Foot Diameter Tank With 10 Foot Burial](https://shop.sourcena.com/lowres/detail/71SO-410CT.jpg)
4 inch 71SO Series CARB EVR Certified Vaportight Testable OPV Overfill Prevention Valve For Up To 10 Foot Diameter Tank With 10 Foot Burial
Item No. 71SO-410CT
The OPW 71SO Overfill Prevention Valve is a 2-Point Shut-off Valve designed to prevent the overfill of Underground Storage Tanks by providing a positive shut-off of product delivery. When the liquid level rises to about 95 Percent of tank capacity, the valve automatically slows flow. If the delivery is not stopped and liquid rises to about 98 Percent of tank capacity, the valve closes completely and liquid cannot flow.
![2 Inch Overfill Prevention Valve Aluminum Body With 3 Inch Female Threads X 4 Inch Female Threads EVR Approved 2 Inch Overfill Prevention Valve Aluminum Body With 3 Inch Female Threads X 4 Inch Female Threads EVR Approved](https://shop.sourcena.com/lowres/detail/9095AA4200AVEVR.jpg)
2 Inch Overfill Prevention Valve Aluminum Body With 3 Inch Female Threads X 4 Inch Female Threads EVR Approved
Item No. 9095AA4200AVEVR
Installed at the fill port of an aboveground storage tank