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The TIGRE USA INC 36-652 is a 4-inch sewer-to-downspout adapter designed to transition metal rain gutter drainage into underground sewer piping. This fitting connects a 2-inch by 3-inch metal rain gutter downspout to a 4-inch underground sewer line, providing a secure, watertight junction between above-grade gutter systems and below-grade drainage infrastructure. It is installed by plumbers and drainage contractors during site drainage work, storm drainage tie-ins, and residential or light commercial gutter-to-sewer connections.
This adapter is suited for residential and light commercial applications where metal rain gutter downspouts need to be routed into an existing 4-inch underground sewer or storm drain system. It is particularly useful during new construction, drainage upgrades, or retrofits where proper downspout termination into a subsurface system is required by local code or site conditions.
Compatible with 2-inch by 3-inch metal rain gutter downspouts and 4-inch underground sewer piping as stated by the manufacturer. Consult local plumbing and drainage codes to confirm suitability for your specific application.
Installation is typically performed by a licensed plumber or drainage contractor. Shut off or divert water flow through the gutter system before making connections, and ensure the underground sewer line is depressurized and accessible. Follow applicable local plumbing codes and IPC guidelines for underground drainage fittings and proper slope requirements. Do not use this adapter on pressurized water supply lines.
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