Commercial Laundry Drainage: Drain Troughs, Lint Interceptors & Lint Baskets

If a washer has stalled mid-cycle or you have paid a plumber to clear a line, you understand the strain that high-volume washer discharge, lint and detergent residue can place on your drainage systems and how they can affect commercial, industrial or institutional laundry services. Addressing these challenges requires laundromat drainage solutions like drain troughs, lint interceptors and lint baskets.

How Laundry Facilities Manage Wastewater, Lint and Detergent Residue

Laundry drainage systems can experience fewer blockages with consistent upkeep, helping reduce emergency plumbing calls and operational downtime. Laundries manage solids and wastewater through three coordinated processes.

Filtering High-Volume Washer Discharge

A drain trough sits behind or beneath the machine line as a holding reservoir. It accepts rapid washer discharge from a bank of machines and then slowly releases it to the sanitary connection at a rate the drain pipe can accommodate. Troughs help washers complete their drain cycle on schedule, which helps keep your machines running and off the error-code list.

A fabricated trough can feature an integrated lint filter, a perforated panel at the outlet end that captures lint, hair and thread before water leaves the trough. A poured pit that skips this filter allows materials to proceed downstream, which can lead to clogs further along the line.

Routine maintenance for the drain trough and the integrated filter involves unscrewing the lid, removing and rinsing the filter and then reinstalling it. This process helps maintain a cleaner floor area and keeps machines operational, directly benefiting customers who rely on functional equipment.

Capturing Solids to Minimize Sewer Line Blockage

Solids can cause issues if they enter the drain line. An industrial, institutional or commercial laundry lint interceptor installs downstream in the waste line and filters solids in two stages. The first screen stops bulk material, while the second one catches fine lint. In coin laundry settings, it can also capture items customers might leave in their pockets, including buttons, pins, hairpins and loose change.

Depending on the jurisdiction, industrial, commercial and institutional laundry drainage systems may need an interceptor with a removable basket that stops solids one-half inch or larger. Ready access to the cover is vital for compliant installation and proper servicing. An industrial laundry lint interceptor may require a removable basket to capture larger debris before it enters the sewer line.

Maintaining a lint interceptor typically includes weekly screen removal and cleaning, though frequency depends on usage. Regular checks confirm that debris is disposed of, helping maintain an open sewer line and keep machines operational.

Adding a Second Layer of Lint Filtration

For facilities with an existing poured-concrete trough, a lint basket adds filtration where the trough currently offers none. Built to the trough’s dimensions, they can include a bottom drain based on your system’s water flow. Attendants can remove the basket, empty the contents into a trash can and return it quickly, enabling quick debris clearing between loads and contributing to continuous operation.

Benefits of Laundry Drainage Management

Commercial, institutional and industrial laundry plumbing systems benefit when facilities choose equipment that matches actual demand. Professional drainage management products can help with:

• Reduced downtime: A filtered drainage setup helps keep water moving during peak cycles, helping keep machines available for customers and reducing error-code stoppages.
• Lower plumbing costs: Catching lint and solids can help minimize emergency drain-clearing calls and extend the life of existing pipes.
• Simplified code compliance: Built-in filters and removable baskets give plumbing officials a straightforward way to verify compliance with local interceptor requirements. Confirm your local plumbing code requirements before ordering equipment.
• Better use of floor space: Drainage solutions can be sized for your layout and placed indoors, outdoors or below floor level, freeing square footage for revenue-producing machines.

Equip Your Business With Drainage Products From H-M Company

H-M Company manufactures several products to help facilities maintain a clear wastewater path, from the washer outlet to the sewer connection.

Drain Troughs

These solutions feature chemical-resistant construction, a securely fastened lid built to support light foot traffic and a removable lint filter. We manufacture troughs in a range of lengths to fit facilities of nearly any size, so there is no need to compromise on layout.

Outlets can be placed on the sides, ends or corners of the trough. A second filter can be added for increased protection. This design supports fast washer drainage and a cleaner floor area. Our coin laundry troughs are available in configurations for self-service floor plans.

Lint Interceptors

Our lint interceptors are available in a range of capacities to accommodate facilities of nearly any size, from a single on-premise laundry to a full coin laundry operation. They feature field-installed inlets and outlets, allowing plumbers to match the unit to the existing layout. Chemical-resistant construction can withstand detergents and bleaches common in laundry operations, helping support long-term system performance.

Lint Baskets

We offer lint baskets that can fit concrete troughs of various sizes. This customizability helps provide a proper fit for your existing infrastructure. The baskets are available with or without a bottom drain, offering flexibility to suit your specific drainage needs. This flexibility supports filtration upgrades, reduces concrete modifications and helps extend the life of your plumbing system.

Why Choose Us for Laundry Drainage Systems?

Together, our drain troughs, lint interceptors and lint baskets address every stage of your facility’s wastewater path, from the washer outlet to the sewer connection. Drain troughs manage high-volume washer discharge, lint interceptors capture solids downstream and lint baskets add filtration to existing concrete troughs.

Founded in 1957 as a distributor of commercial laundry equipment, H-M Company began building lint interceptors and drain troughs in 1992 to address drainage challenges for customers. This field experience helps us build units around the needs of real laundry facilities. 

Some of our solutions hold Uniform Plumbing Code (UPC) certification from the International Association of Plumbing and Mechanical Officials (IAPMO) Research and Testing. This certification provides plumbing officials with a recognized listing for review. 

Get High-Quality Laundromat Drainage Solutions

H-M Company is committed to supporting commercial, industrial and institutional laundry operations. Because we fabricate our solutions to order, each product is built to the space and demand of your facility. Provide your machine count, drain size and available space, and we can size the right combination of products for your facility. We ship nationwide and internationally for laundries outside our local service area. 

Contact us online to speak with an expert about custom drainage specifications for your facility.