Check valve
Underground Storage Tank Equipment
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![Check Valve With Spring (Red) Check Valve With Spring (Red)](https://shop.sourcena.com/lowres/detail/144-183-5.jpg)
Check Valve With Spring (Red)
Item No. 144-183-5
For spill containment and pressure relief of standard Red Jacket 4 inch submersible pumps
![Brass Manual Relief Screw Assembly Brass Manual Relief Screw Assembly](https://shop.sourcena.com/lowres/detail/400629901.jpg)
Brass Manual Relief Screw Assembly
Item No. 400629901
Includes 400627001 retaining ring, 400616001 manual relief screw, 400333012 relief screw top O-ring, and 400333007 relief screw bottom O-ring
![High Pressure Check Valve Kit For Red Jacket Stp And Variable Speed Stp High Pressure Check Valve Kit For Red Jacket Stp And Variable Speed Stp](https://shop.sourcena.com/lowres/detail/410153-002.jpg)
High Pressure Check Valve Kit For Red Jacket Stp And Variable Speed Stp
Item No. 410153-002
![Jack Screw Kit For Composite Base Jack Screw Kit For Composite Base](https://shop.sourcena.com/lowres/detail/61JSK-4410.jpg)
Jack Screw Kit For Composite Base
Item No. 61JSK-4410
Allows liquid in the spill containment to drain directly into the drop tube
![Jack Screw Kit For Cast Iron Base Jack Screw Kit For Cast Iron Base](https://shop.sourcena.com/lowres/detail/61JSK-44CB.jpg)
Jack Screw Kit For Cast Iron Base
Item No. 61JSK-44CB
Allows liquid in the spill containment to drain directly into the drop tube
![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.
![Conduit Junction Box Conduit Junction Box](https://shop.sourcena.com/lowres/detail/108-496-5.jpg)
Conduit Junction Box
Item No. 108-496-5
Conduit junction box - single opening, 2 wire, 2 inch NPT
![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