Commercial Plumbing: Fixing a Three-Compartment Sink Leak

A restaurant reported a leak below its three-compartment sink. On October 12, 2026, Masterline Facilities tech Anthony Rueda found a leaking gasket at one basin’s drain. He changed the gasket, put the drain lines back together and filled the basin to test it. His note says he found no leak.

This commercial plumbing case covers one repair and its check that day. It is not a claim about how long every repair will last.

Sink drain body, black gasket and pipe below the stainless-steel basin — The saved after photo shows the drain body and gasket below the basin. The work note records the gasket change.

Find the leak before choosing the repair

The request pointed to the pipes under the sink. The tech checked the first compartment and found the leak at the sink washer, also called a gasket. This part seals the drain body against the basin.

That detail matters. A leak under a sink does not, by itself, tell the team which part has failed. The visit note should name the part the tech checked.

What the tech did

The tech cut the ABS drain pipes to remove the drain body and old gasket. ABS is the black plastic pipe used in this drain. He cleaned the top and bottom of the sink surface and the drain body.

He put fresh silicone at the base, added a new gasket and tightened the drain body in place. He then joined the drain lines with two 2-inch no-hub couplings. These are connectors that clamp around the pipe ends.

Black drain pipes joined by metal-banded couplings beneath the sink — The reconnected drain lines. The tech’s note records two 2-inch no-hub couplings, which join the cut pipe ends.

What the check showed

The tech filled the repaired compartment and checked for leaks. His note says he found none. He cleaned the work area, showed management and checked out.

The photos support the story by showing the drain parts and the sink. A still photo alone cannot prove that a drain did not leak. That result comes from the test written in the service note.

Water flowing from a faucet into a stainless-steel three-compartment sink — A photo saved after the work. The separate service note says the tech filled the repaired compartment and found no leak.

How MIQ kept the steps together

The request: IQ saved the sink problem on October 9.
The visit: The office assigned the tech and saved the schedule. IQ holds the October 12 check-in and checkout.
The work: The tech added the repair note and before, during and after photos. The visit also has a sign-off on file.
The next office step: On October 19, the job moved to Complete | Ready For Billing.

The visit ended on October 12. The job reached the ready-to-bill stage a week later. Those are different dates. When we reviewed it on October 21, no invoice, billing export or payment record was linked to this job. We do not call it a paid job.

See how MIQ keeps requests, field notes and billing steps together. This record shows people using IQ. It does not show AI carrying out the repair or prove time or cost savings.

What to ask for in a sink repair note

Which basin and which part leaked?
What did the tech clean, change or reconnect?
Was the basin filled and checked after the work?
Is more field work needed, or is the next step in the office?

Need help with a business site? Read about commercial plumbing maintenance and repair, or request service. The dripping hand-sink case covers a different fault inside a faucet.

MasterlineIQ (MIQ) was built by Tim Yslava for the family’s businesses. IQ keeps the records together. The techs do the field work. People check the work and the bill.

The job example uses saved service notes, visit records and matched photos reviewed October 21, 2026. Customer names, exact locations and private terms are omitted.