Can a restaurant's drain lines be jetted without closing the kitchen?

Not while those drains are in use. Jetting sends water and loosened grease down the line, so the sinks and floor sinks on it have to sit idle. Book it after close or before prep starts. Ask for that window when the plumber calls, and have someone there to unlock the back door and the cleanouts.

Why does our floor sink back up when the dish machine drains?

The floor sink and the dish machine can share a line, and a sudden dump of hot water finds the narrowest point. Grease softened upstream sets again where the water cools, often just past the floor sink. When it overflows on every dish cycle, the line downstream has narrowed, and a camera shows how far the coating runs.

Does Torrance require restaurant drain lines to be jetted on a schedule?

No Torrance rule found sets a jetting schedule for kitchen drain lines. The city's grease rules focus on the trap or interceptor and the records kept for it, which grease trap cleaning covers. How often to jet the lines depends on how fast they coat, and a camera pass after each cleaning gives you that answer.

Restaurant Drain Cleaning in Torrance, CA

Typical cost: no cost guide prices a restaurant line on its own; one commercial cost article puts commercial jetting at $500 to $2,500 a job
Time on site: an hour or two for a typical clog; a line packed solid with grease runs longer
Warewashing sink: at least 3 compartments under the California Retail Food Code, all draining toward the same line

Torrance Hydro Jet forwards your kitchen's details to an independent plumber who works on commercial kitchen drains: floor sinks, prep and pot sinks, dish machine lines and the grease line to the interceptor. Include which drain backs up, at what time of day, and where the cleanouts are.

Restaurant Drain Cleaning by Kitchen Line

Square stainless floor sink set into a red quarry-tile commercial kitchen floor under a prep table, its grate lifted and indirect drain pipes ending above it

Floor Sinks and Floor Drains

A floor sink takes the waste from several pieces of equipment at once. California's food code sends steam tables, ice machines, prep sinks, warewashing sinks and walk-in coolers to floor sinks through indirect pipes with an air gap, and requires those receptors to stay reachable for cleaning. When one backs up, the water pools under the equipment. Clearing it means jetting from the floor sink down to where that line joins the main.

Stainless three-compartment pot sink in a restaurant kitchen with the cabinet panel removed, showing the drain lines joining below and a gray jetter hose fed into a cleanout tee

Fryer, Prep and Three-Compartment Sink Lines

The pot sink's wash, rinse and sanitize compartments, plus fryer baskets and sheet pans scrubbed at the prep sink, send hot, greasy water into the same branch. Farther along, the water cools and the fat sets on the pipe wall. A rotating nozzle is built for this kind of coating: it cuts grease off the whole circumference instead of boring one hole through it.

Commercial dish machine on a stainless table with the side panel off, its gray drain hose running to a pipe that joins the kitchen line near a floor drain

Dish Machine Drain Lines

State code lets a dish machine connect straight to the sewer just downstream of a floor drain, or drain through an indirect connection. Either way it dumps a lot of hot water and detergent in a short burst. That pushes softened grease farther down the line, where it sets again. A dish machine that drains slowly, or a floor drain that bubbles during the cycle, points to a narrowing line.

Restaurant back door open at night with a gray jetter hose running across the kitchen floor to an open cleanout near the grease interceptor lid, work lights on stands

After-Hours Grease Line Jetting

The grease line runs from the kitchen fixtures to the interceptor, and another line carries the interceptor's outlet to the sewer. A pumping truck empties the interceptor; it doesn't clean either pipe. Jetting both runs after close lets the kitchen open on time the next morning. For the city's trap sizing and record rules, see grease trap cleaning.

Gloved hands feeding a high-pressure jetting hose with a steel nozzle into a sewer cleanout in a concrete walkway

Why Torrance homeowners and businesses call Torrance Hydro Jet

One independent plumber gets your request, never a call list
The referral itself costs you nothing
Ask for the camera video and a written price before repairs
Check the plumber's C-36 license on CSLB in a minute

What to Tell the Plumber About Your Kitchen

When it backs up
During the dish rush, after closing cleanup or first thing in the morning. The timing points to which line is narrowing.
Which fixtures share the problem
A single floor sink is a branch job; floor sinks and the pot sink together suggest the line they share.
Where the access is
Cleanouts inside and out, and whether the interceptor sits under the floor or out back. Clear mats and boxes off them before the visit.
Your service hours
So the work lands after close or before prep, with someone there to open up.
Past paperwork
Earlier invoices and camera video show how fast the lines coat. Keep the new ones with your grease records too.

See commercial drain cleaning for restrooms and other lines in the same building.