Floor Sink Drains

Yes, floor sinks require a trap to maintain a water seal that blocks sewer gases and odors from entering the facility. Most plumbing codes require an integral or accessible trap beneath the floor sink, and proper trap sizing and venting are essential for code compliance and effective drainage in commercial kitchens.

A floor sink is a shallow recessed basin, often fitted with a strainer basket, that receives direct indirect waste discharge and allows visual inspection of drainage. A hub drain is typically a vertical pipe stub extending above the floor, used for indirect waste connections where a full floor sink basin is not required by code or facility design.

Commercial floor sink drains are typically constructed from heavy-gauge stainless steel, such as 14 or 16 gauge, for corrosion resistance, sanitation, and durability. Stainless steel construction withstands frequent washdowns, chemical exposure, and heavy foot traffic common in foodservice, healthcare, and industrial environments while meeting NSF sanitation requirements.

Floor sink drains are available in various depths and footprint sizes to match drainage volume and equipment discharge requirements. Common configurations include recessed drain openings around 3 to 4 inches in diameter, with basin depths suited to indirect waste piping and local plumbing code requirements for commercial kitchen and industrial installations.

Regularly remove and clean the strainer basket to prevent grease and food debris buildup, flush the basin with hot water, and schedule periodic professional drain cleaning. Consistent maintenance prevents odors, slow drainage, and code violations, particularly in high-volume commercial kitchens and food processing facilities.

While floor sink drains themselves are typically installed below floor level, associated fixtures and surrounding installations in accessible facilities should meet ADA and applicable state accessibility standards such as TAS. Griffin Products offers ADA and TAS configurations across its stainless steel product line for compliant facility design.