The CARB-certified OPW 71SO vapor-tight Overfill Prevention Valve is designed to prevent the overfill of underground storage tanks by providing a positve shut off of product delivery. The shut off valve is an integral part of the drop tube used for gravity filling. The OPW 71SO allows easy installatiion without breaking concrete and no special manholes. Retrofits directly for new and existing tanks with 4" fill risers.
Features
Simple, Easy and Quick InstallationNo excavation or special manhole
Retrofits Directly
For both new and existing tanks
Quick Drain Feature
Automatically drains hose when head pressure is relieved
Will Accept A Dip Stick For Gauging
Economical
Costs a fraction of expensive and difficult to install valves
No Epoxy Sealants Required
