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Presenting the OPW 61-SO <br /> Overfill Prevention Valve Series <br /> Ouratented design i <br /> p gn s <br /> the most effective and <br /> the most versatile <br /> i The OPW 61-SO overfill prevention valve is <br /> r designed to be a simple, low cost solution to <br /> shut-off of product fill to underground storage <br /> tanks. The shut-off valve is an integral part <br /> of the 4" drop tube used for submerged filling. <br /> The OPW 61-SO allows easy installation with- <br /> out breaking concrete and no special manholes <br /> are required. It is as simple as changing drop- <br /> tubes. <br /> Designed to meet two point fill, coaxial fill, <br /> and poppeted coaxial fill applications,the OPW <br /> 61-SO family continues to grow. Its newest <br /> member, the 61-SOM, is designed for compat- <br /> ibility with M-85 and M-100 methanol fuels,dual <br /> point fill and vapor recovery. <br /> Every member of the <br /> OPW 61-SO series <br /> ■ Completely automatic operation-no pre- <br /> features ... checks to perforin, no resets, no overrides to be <br /> broken or abuse. <br /> ■ Works at all flow rates - operates directly <br /> ■ Simple, easy and quick installation- no from liquid level. <br /> excavation or special manholes required. <br /> ■Will accept a dipstick for gauging. <br /> ■ Economical - costs a fraction of expensive, <br /> complicated and difficult to install valves. ■ Retrofits directly - for existing tanks and <br /> ■ Furnished complete- with new upper and 4"riser pipes. <br /> lower droptubes, mounting hardware and in- ■ Automatic hose drain - for operator con- <br /> structions for quick job site time. venience. <br />