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OPW : Products: Category Page 2 of 2 <br />w <br />Products <br />61SO Series Overfill Prevention Valves <br />The OPW 61SO Overfill Prevention Valve is designed to prevent the overfill of underground stc <br />by providing a positive shut-off of product delivery. The shut-off valve is an integral part of th <br />tube used for gravity filling. The OPW 61SO allows easy installation (without breaking concrete <br />requires no special manholes. <br />The OPW 61SO is a two-stage shut-off valve. When the liquid level rises to about 95% of tank <br />the valve mechanism is released, closing automatically with the flow. This reduces the flow ra <br />approximately 5 gpm through a bypass valve. The operator may then stop the filling process <br />disconnect and drain the delivery hose. As long as the liquid exceeds the 95% level, the valve <br />automatically each time delivery is attempted. <br />If the delivery is not stopped and the liquid rises to about 98% of tank capacity, the bypass vi <br />completely. No additional liquid can flow into the tank until the level drops below a reset point <br />the 61SO are available to meet virtually any UST application including two-point, coaxial, pops <br />coaxial and remote fill. The 61SO-3000 provides two-point overfill protection for 3" riser pipes <br />61SO-1000 and 61SO-100C (CARE) feature a grooved -tube design for use with tank gauging <br />Methanol and CARB (vapor -tight) approved models are also available. The OPW 61SO is apprc <br />New York City Fire Department. (Approval #4902) <br />https://www.opw-fc.com/product_category.aspx?cid=56 <br />2/11/2007 <br />