Watts 909RPDA-D0SY-CFM-FS 3 - Part of the 909RPDA Series Sheet Drain Its flat design makes it

Its flat design makes it suitable for areas where a dome strainer is not appropriate or where minimal projection above the roof surface is required

The advantage of these is how well the plates can withstand harsh weather conditions and also withstand abuse from heavy-duty service equipment such as snowplows

O-ring to prevent leaks

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Watts 909RPDA-D0SY-CFM-FS 3 - Part of the 909RPDA Series Sheet Drain Its flat design makes itThis 3 inch reduced pressure detector backflow preventer assembly prevents the reverse flow of fire protection system substances from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure. It is ideal for protection in continuous pressure piping applications and at cross connections identified as health hazards. This assembly consists of an epoxy coated cast iron body, domestic OSY resilient seated gate