OPW 71SO Segmented Vapor-Tight Overfill Valve (Testable)

The 71SO Segmented Overfill Prevention Valve doesn’t require special manholes and is easy to install without breaking concrete. The four 5′ segments can be customized to fit 8-12′ tank diameters, with an overall length exceeding 223″.

• Easier, more cost-effective shipping and storage
• Easy and economical installation (tube joiners included)
• Compatible up to B100 (non-E85 versions)

The OPW 71SO is a two-stage shut-off valve. During installation, the 71SO provides the flexibility to put the shut- off feature anywhere in the tank which is acceptable by local regulation. When the liquid level rises to the desired shut off level, the valve mechanism is released, closing automatically with the flow. This reduces the flow rate to approximately 5 gpm through a bypass valve. The operator then stops the filling process, disconnects and drains the delivery hose. If liquid exceeds the desired shutoff level, the valve will close automatically each time delivery is attempted.