Welcome to PDI Online
The Plumbing and Drainage Institute is the premier source of
information for plumbing and drainage products such as: floor drains, roof
drains, sanitary floor drains, cleanouts, water hammer arresters,
backwater valves, grease interceptors, fixture supports, and other
drainage specialties with specific expertise in Hydro-Mechanical Grease
Interceptors and Water Hammer Arresters.
Our Standards, Publications and Training Seminars are a valuable resource
for plumbing and drainage professionals, architects, contractors, and public
officials.
All our published material is available as a free download from this web
site.
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