The Watts RD-800 is a super-large-area primary roof drain designed for heavy-duty commercial and industrial roof systems that require maximum drainage capacity. Its epoxy-coated cast iron body provides long-term durability and corrosion resistance, while the flashing clamp and integral gravel stop ensure a secure, watertight connection to the roofing membrane. A large self-locking polyethylene dome protects the drain from debris, and the unit is supplied with a standard no-hub outlet for straightforward installation.
Key Features
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Epoxy-coated cast iron body for long-lasting durability
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Flashing clamp with integral gravel stop for secure membrane integration
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Large self-locking polyethylene dome for effective debris protection
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Standard no-hub outlet for easy connection
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Ideal for super-large-area primary roof drainage applications
