3/8 Inch Port
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![4 Inch Probe Cap With 3/8 Inch Grommet 4 Inch Probe Cap With 3/8 Inch Grommet](https://shop.sourcena.com/lowres/detail/116M-0375.jpg)
4 Inch Probe Cap With 3/8 Inch Grommet
Item No. 116M-0375
Drilled and tapped to accept 3/8 Inch wire grommet to secure an electronic tang gauge probe in a tank riser pipe
![Aluminum 4 Inch Tank Monitor Cap With 3/8 Inch, EVR Approved Aluminum 4 Inch Tank Monitor Cap With 3/8 Inch, EVR Approved](https://shop.sourcena.com/lowres/detail/305XP-0100ACEVR.jpg)
Aluminum 4 Inch Tank Monitor Cap With 3/8 Inch, EVR Approved
Item No. 305XP-0100ACEVR
Aluminum 4 inch threaded port hole 3/8 inch, 2 pound
![4 Inch Tank Monitoring Cap/Adapter Combination With 3/8 Inch Hole 4 Inch Tank Monitoring Cap/Adapter Combination With 3/8 Inch Hole](https://shop.sourcena.com/lowres/nophoto.gif)
4 Inch Tank Monitoring Cap/Adapter Combination With 3/8 Inch Hole
Item No. 305XPA-0100AK
Keeps water dirt and debris out of the tank prevents vapors from escaping
![2 Inch Tank Monitor Cap & Adapter With 3/8 Inch Threaded Porthole And Cable Connector 2 Inch Tank Monitor Cap & Adapter With 3/8 Inch Threaded Porthole And Cable Connector](https://shop.sourcena.com/lowres/detail/305XPA-2200AK.jpg)
2 Inch Tank Monitor Cap & Adapter With 3/8 Inch Threaded Porthole And Cable Connector
Item No. 305XPA-2200AK
Combination cap and Adapter kit for leak detection systems
![4 inch 61SOP Series Single-Point Poppeted Coaxial CARB-Approved OPV Overfill Prevention Valve For Up To 8 Foot Diameter Tank With 5 Foot Burial 4 inch 61SOP Series Single-Point Poppeted Coaxial CARB-Approved OPV Overfill Prevention Valve For Up To 8 Foot Diameter Tank With 5 Foot Burial](https://shop.sourcena.com/lowres/detail/61SOP-4002.jpg)
4 inch 61SOP Series Single-Point Poppeted Coaxial CARB-Approved OPV Overfill Prevention Valve For Up To 8 Foot Diameter Tank With 5 Foot Burial
Item No. 61SOP-4002
The OPW 61SO Overfill Prevention Valve is a 2-Stage 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 61SOP Series Single-Point Poppeted Coaxial CARB-Approved OPV Overfill Prevention Valve For Up To 10 Foot Diameter Tank With 10 Foot Burial 4 inch 61SOP Series Single-Point Poppeted Coaxial CARB-Approved OPV Overfill Prevention Valve For Up To 10 Foot Diameter Tank With 10 Foot Burial](https://shop.sourcena.com/lowres/detail/61SOP-4012.jpg)
4 inch 61SOP Series Single-Point Poppeted Coaxial CARB-Approved OPV Overfill Prevention Valve For Up To 10 Foot Diameter Tank With 10 Foot Burial
Item No. 61SOP-4012
The OPW 61SO Overfill Prevention Valve is a 2-Stage 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 61SOR Series Dual-Point Non-Vaportight Remote Fill OPV Overfill Prevention Valve For Up To 8 Foot Diameter Tank 4 inch 61SOR Series Dual-Point Non-Vaportight Remote Fill OPV Overfill Prevention Valve For Up To 8 Foot Diameter Tank](https://shop.sourcena.com/lowres/detail/61SOR-4000.jpg)
4 inch 61SOR Series Dual-Point Non-Vaportight Remote Fill OPV Overfill Prevention Valve For Up To 8 Foot Diameter Tank
Item No. 61SOR-4000
The OPW 61SO Overfill Prevention Valve is a 2-Stage 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 61SOR Series Dual-Point Remote Fill OPV Overfill Prevention Valve For Up To 8 Foot Diameter Tank 4 inch 61SOR Series Dual-Point Remote Fill OPV Overfill Prevention Valve For Up To 8 Foot Diameter Tank](https://shop.sourcena.com/lowres/detail/61SOR-400C.jpg)
4 inch 61SOR Series Dual-Point Remote Fill OPV Overfill Prevention Valve For Up To 8 Foot Diameter Tank
Item No. 61SOR-400C
The OPW 61SO Overfill Prevention Valve is a 2-Stage 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 X 13 Foot Poppeted Coaxial Fill Drop Tube 4 Inch X 13 Foot Poppeted Coaxial Fill Drop Tube](https://shop.sourcena.com/lowres/detail/61TCP-3800.jpg)
4 Inch X 13 Foot Poppeted Coaxial Fill Drop Tube
Item No. 61TCP-3800
Poppeted coaxial fill drop tube is similar to the 61TC but is spring-loaded
![4 Inch Aluminum Tank Monitor Cap And Adapter 3/8 Inch Grommet 4 Inch Aluminum Tank Monitor Cap And Adapter 3/8 Inch Grommet](https://shop.sourcena.com/lowres/detail/62M-0375.jpg)
4 Inch Aluminum Tank Monitor Cap And Adapter 3/8 Inch Grommet
Item No. 62M-0375
The 62M Monitoring Probe & Adapter Kit includes a 4 inch side-sealing Adapter 4 inch side-sealing cap (tapped) and a 3/8 inch wire grommet to secure the cable from an electronic tank gauge probe in the tank riser pipe
![UNLEADED REGULAR Storage Tank Spill Container ID Collar UNLEADED REGULAR Storage Tank Spill Container ID Collar](https://shop.sourcena.com/lowres/detail/U-TC-3.jpg)
UNLEADED REGULAR Storage Tank Spill Container ID Collar
Item No. U-TC-3
Black text on White background
![DIESEL OFF ROAD Storage Tank Spill Container ID Collar DIESEL OFF ROAD Storage Tank Spill Container ID Collar](https://shop.sourcena.com/lowres/detail/U-TC-38.jpg)
DIESEL OFF ROAD Storage Tank Spill Container ID Collar
Item No. U-TC-38
- Helps to prevent confusion and reduce mistakes.
![UNLEADED PREMIUM Storage Tank Spill Container ID Collar UNLEADED PREMIUM Storage Tank Spill Container ID Collar](https://shop.sourcena.com/lowres/detail/U-TC-4.jpg)
UNLEADED PREMIUM Storage Tank Spill Container ID Collar
Item No. U-TC-4
Red text on White background
![E85 Storage Tank Spill Container ID Collar E85 Storage Tank Spill Container ID Collar](https://shop.sourcena.com/lowres/detail/U-TC-40.jpg)
E85 Storage Tank Spill Container ID Collar
Item No. U-TC-40
Brown text on White background
![Unleaded Premium ARCO Gasoline Storage Tank Spill Container ID Collar Unleaded Premium ARCO Gasoline Storage Tank Spill Container ID Collar](https://shop.sourcena.com/lowres/nophoto.gif)
Unleaded Premium ARCO Gasoline Storage Tank Spill Container ID Collar
Item No. U-TC-500C-ARCOPREMIUM
Red text on White background
![Unleaded Regular ARCO Gasoline Storage Tank Spill Container ID Collar Unleaded Regular ARCO Gasoline Storage Tank Spill Container ID Collar](https://shop.sourcena.com/lowres/nophoto.gif)
Unleaded Regular ARCO Gasoline Storage Tank Spill Container ID Collar
Item No. U-TC-500C-ARCOREGULAR
Black text on White background
![DIESEL Storage Tank Spill Container ID Collar DIESEL Storage Tank Spill Container ID Collar](https://shop.sourcena.com/lowres/detail/U-TC-7.jpg)
DIESEL Storage Tank Spill Container ID Collar
Item No. U-TC-7
Black text on Yellow background
![4 Inch EVR Approved Tank Monitor Cap With 3/8 Inch Threaded Porthole And Cable Connector 4 Inch EVR Approved Tank Monitor Cap With 3/8 Inch Threaded Porthole And Cable Connector](https://shop.sourcena.com/lowres/detail/305XP-0200ACEVR.jpg)
4 Inch EVR Approved Tank Monitor Cap With 3/8 Inch Threaded Porthole And Cable Connector
Item No. 305XP-0200ACEVR
![DIESEL #2 ARCO DIESEL Storage Tank Spill Container ID Collar DIESEL #2 ARCO DIESEL Storage Tank Spill Container ID Collar](https://shop.sourcena.com/lowres/detail/U-TC-500C-ARCODIESEL%232.jpg)
DIESEL #2 ARCO DIESEL Storage Tank Spill Container ID Collar
Item No. U-TC-500C-ARCODIESEL#2
Black text on Yellow background
![2 Inch EVR Approved Tank Monitor Cap and Adapter With 3/8 Inch Threaded Porthole 2 Inch EVR Approved Tank Monitor Cap and Adapter With 3/8 Inch Threaded Porthole](https://shop.sourcena.com/lowres/detail/305XPA-2200AKEVR.jpg)
2 Inch EVR Approved Tank Monitor Cap and Adapter With 3/8 Inch Threaded Porthole
Item No. 305XPA-2200AKEVR
- Comes with a 3/8 inch cable connector port
![4 Inch Evr Approved Tank Monitor Cap/Adapter With 3/8 Inch Port & Cable Connector 4 Inch Evr Approved Tank Monitor Cap/Adapter With 3/8 Inch Port & Cable Connector](https://shop.sourcena.com/lowres/detail/305XPA-0200AK.jpg)
4 Inch Evr Approved Tank Monitor Cap/Adapter With 3/8 Inch Port & Cable Connector
Item No. 305XPA-0200AK
Keeps water dirt and debris out of the tank prevents vapors from escaping