Watts LFMMVM1-UT (W/PRESS) 1/2 - Part of the LFMMV Series Basement Window Well high volume roof drain features

high volume roof drain features a flashing clamp with an integral gravel stop

is used for repairing the parts to the relief valve series 009 to prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage and or backpressure

here’s how to solve the drainage problem

a self-closing hinged grate for safety under traffic

Watts LFMMVM1-UT (W/PRESS) 1/2 - Part of the LFMMV Series Basement Window Well high volume roof drain featuresThis 1 2 inch lead free thermostatic mixing valve is designed for residential, commercial or institutional environments for supplying baths or lavatories with tempered water. The double throttling design controls both hot and cold water supply to the mixed outlet. It consists of a lead free brass body, Viega ProPress connections, solid wax hydraulic principle thermostat, integral filter washers and check valves with a locking mechanism for the