Tubular

Dearborn® Plastic and Brass Tubular products are available in a variety of 1-¼” and 1-½” options. These include P-Traps, S-Traps, Waste Arms, Extension Tubes, and many more. Dearborn also offers 1-½” Semi-Cast Brass P-Traps for commercial applications.

Frequently Asked Questions

Do the brass tubular products come in different thicknesses?

Yes. Our brass tubular products are offered in three different thicknesses (gauges). 17 gauge is the thickest, and is often referred to as commercial grade 20 gauge is our mid-range thickness 22 gauge is our thinnest, and is sometimes referred to as “budget grade”  

How is the size of the tubular product determined for each application?

The most common tubular product sizes are 1¼” and 1½”. These sizes are available in brass and plastic tubular products. The trap adapter connection to the branch drain in the wall will determine the largest size of tubular product which can be connected with a slip nut and washer. This point of connection can also be reduced for 1¼” tubular assemblies, with a reducing washer and slip nut. Bathroom sink installations are normally completed with 1¼” tubular products, but 1½” tubular products will also work. Kitchen sink installations can only be completed with 1½” tubular products. 

What makes the True Blue slip joint washer better than others?

True Blue is IAPMO listed. True Blue won’t dry out or crack. This ensures long, leak-free protection. True Blue has superior flex fatigue protection, which extends the life of the washer. True Blue has advanced Thermoplastic Elastomer (TPE) properties. This allows the True Blue to retain its shape when the traditional polypropylene washer may not. Overall; the Ultra flexible elastomer washer combined with the tapered design, provides the end user with ultimate leak protection.

Which tubular products come with the True Blue washer?

With the exception of the P9703 and P9703BG, all of our plastic tubular products come with the True Blue washer. The P9703 and P9703BG come with the polyethylene rigid washer. All brass tubular products come with a square cut rubber washer, which performs better on the chromed surfaces.  

What do I put on the fine threads of the pop-up tail piece to stop it from leaking?

You can use one of our thread tapes or pipe joint compounds to complete this application. If you are using thread tape, wrap the male threads on the tail piece 2 or 3 times, and then screw the tail piece into the pop-up body. After the drain has been tested and found to be water tight, you can cut the excess thread tape off if desired. If you use pipe joint compound, only apply it to the male threads of the tail piece and wipe off excess after the drain has been tested.

Are S-Traps approved for installation on projects that require a plumbing permit and or inspection?

No. The S-Trap is not approved for any installations that require a plumbing permits and or inspections.

Are Form-N-Fit Plastic Tubular products approved for installation on projects that require a plumbing permit and or inspection?

No. The Form-N-Fit is not approved for any installations that require a plumbing permits and or inspections. 

How is the dishwasher drain hose connected to the kitchen drain?

If you have a disposal installed in your kitchen sink, the dishwasher drain can be connected to the ¾” drain port designed into every residential disposal. If a disposal is not available for a drain connection, Oatey offers several styles of dishwasher branch tail pieces for this application. You can find these available tail pieces in category 15 in the Oatey catalog or on our website.

Can the plastic tubular products be assembled with solvent cements instead of slip nuts/washers?

No. The polypropylene materials cannot be assembled with solvent cements, they have to be assembled with the slip nuts/washers.

Are there tubular traps that can connect to a 2? iron pipe male thread?

Yes. The N.Y. Code and L.A. Code traps are designed to work for this application.

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