Class A Customs 40 Gallon Black RV Waste Water Tank Model WT-4000

Description

Product Overview

The Class A Customs 40‑gallon black water tank is engineered for RVs, campers and trailers that require dependable waste water storage. Built from medium density polyethylene (MDPE) resin, the tank offers superior resistance to chemicals, UV exposure and impact. Its rectangular shape (56.5″ L x 24.5″ W x 9″ H) maximizes space while fitting standard RV compartments. The tank includes a fixed 3‑inch ABS female outlet for secure dump valve connections, and is vented for safe operation.

Usage

Designed exclusively for gray and black water, this tank is perfect for long‑term road trips, weekend getaways, and full‑time RV living. Install it in the rear or under‑carriage of your vehicle, connect PVC or ABS piping to the outlet, and ensure proper venting to prevent pressure buildup. The tank’s 40‑gallon capacity provides ample storage for up to several days of use before needing to be emptied at a dump station.

Why Choose Us

Class A Customs manufactures every tank in the United States, adhering to strict quality controls and using premium MDPE resin for long‑lasting performance. Each unit undergoes rigorous testing for leak resistance and structural integrity. Our tanks are designed with the end‑user in mind—no unnecessary fittings, easy‑to‑install outlet, and clear labeling for quick setup. We also back our product with responsive customer support and a warranty that covers material defects.

Key Features

• Durable MDPE construction resists cracks, corrosion and UV damage.
• 40‑gallon capacity supports multiple days of waste water storage.
• Fixed 3‑inch ABS outlet simplifies dump valve installation.
• Rectangular design fits standard RV compartments efficiently.
• U.S. manufacturing and dedicated support ensure peace of mind.

FAQ

Can this tank be used for drinking water?

No, the tank is rated for waste and gray water only and should not be used for potable water.

Do I need additional fittings for the outlet?

The tank includes a 3‑inch ABS female outlet; you will need to supply compatible pipe, dump valve and venting hardware.

Is the tank vented out of the box?

The tank itself is not pre‑vented; you must install a vent pipe according to local regulations.

What is the weight of the tank when empty?

The tank weighs approximately 0.01 ounces when empty, making it easy to handle during installation.

How do I clean the tank?

Use a non‑abrasive cleaner and rinse thoroughly; avoid harsh chemicals that could degrade the MDPE material.