With integrated vortex breaker strainer technology the hercules plus retrodrain can provide up to 2 5 times greater water flow to reduce excessive water and weight from the roof faster. Hercules retrodrains the industry s most popular retrofit drain are available in 3 4 5 and 6 inch sizes and with a variety of options to support any project including omg s exclusive vortex breaker strainer dome which can increase flow by up to 2 5 times see hercules plus tpo or pvc coated flange for direct membrane attachment and with a copper stem and flange for more corrosive environments. Hercules plus drain body roof membrane u flow seal deck existing drain existing pipe examine the existing water leader to make sure there are no elbows that prevent the drain stem from being fully inserted into the pipe.
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