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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
![DIESEL 3 Inch Round In-Ground Cast Aluminum Tank/Product Identification Marker With Black Text On Yellow Background DIESEL 3 Inch Round In-Ground Cast Aluminum Tank/Product Identification Marker With Black Text On Yellow Background](https://shop.sourcena.com/lowres/detail/53-D.jpg)
DIESEL 3 Inch Round In-Ground Cast Aluminum Tank/Product Identification Marker With Black Text On Yellow Background
Item No. 53-D
Color-coded identification marker with API specifications for quick visual identification of underground stored fuels to read DIESEL
![In-Ground Tank/Product Id Marker Raised Letter Cast : Premium In-Ground Tank/Product Id Marker Raised Letter Cast : Premium](https://shop.sourcena.com/lowres/detail/A0998-016.jpg)
In-Ground Tank/Product Id Marker Raised Letter Cast : Premium
Item No. A0998-016
Identify product grade in the underground tanks lower profile with beveled edge minimizes tripping hazard
![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.