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Warewashing sink

Four-Compartment Sinks

Every BK 4-compartment sink — 8 models by bowl size, drainboard and price, with the health-department rules that decide which you need.
Specs & list prices from BK 2026 catalog. Images/instructions on bk-resources.com.

Health-department & code relevance HIGH-VOLUME WAREWASHING

A four-compartment sink adds a scrape/pre-soak bay ahead of wash-rinse-sanitize — for high-volume lines. Same rules as three-comp: bowls sized to your largest item, drainboards, indirect waste.

See exactly what your state & county require →

Which size is right?

Four-compartment sinks are for volume — the extra bay pre-scrapes before wash. Size bowls to your largest item; expect a long footprint.

8 models compared

ModelBowl sizeTierDrainboardList price
CSTR5-4-101410" x 14" bowlsstandardnone$2996
CSTR5-4-1014H10" x 14" bowlsstandardnone$3376
CSTR5-4-1014HHS10" x 14" bowlsstandardnone$3581
CSTR5-4-1014HHS-PG10" x 14" bowlsstandardnone$3870
CSTR5-4-1014H-PG10" x 14" bowlsstandardnone—
CSTR5-4-1014-PG10" x 14" bowlsstandardnone—
BKS-4-1620-14-18T16" x 20" bowlsstandarddual—
BKS-4-1620-14-18TS16" x 20" bowlsstandarddual—

All NSF-class — the real choice is bowl size × drainboards × tier × price.

Frequently asked

What is a 3 compartment sink?
A four-compartment sink is a commercial stainless warewashing/prep sink with 4 bowls. A four-compartment sink adds a scrape/pre-soak bay ahead of wash-rinse-sanitize — for high-volume lines.
How big is a 3 compartment sink?
Four-compartment sinks are for volume — the extra bay pre-scrapes before wash. Size bowls to your largest item; expect a long footprint.
3 compartment sink vs dishwasher
A 3-compartment sink is for manual warewashing (wash/rinse/sanitize); a dish machine speeds it up but many health departments still require the 3-comp as a backup and for large items. They are complementary, not either/or.
How much is a 3 compartment sink?
BK 4-compartment sinks run about $2996–$3870 list depending on bowl size, drainboards and tier (see the table). Dealers sell below list.
Do I need a 3-compartment sink if I have a dishwasher?
A 3-compartment sink is for manual warewashing (wash/rinse/sanitize); a dish machine speeds it up but many health departments still require the 3-comp as a backup and for large items. They are complementary, not either/or.
How big does each compartment need to be?
Four-compartment sinks are for volume — the extra bay pre-scrapes before wash. Size bowls to your largest item; expect a long footprint.