Custom Marine Holding Tanks
Boat Water Holding Tank
One Clarion offers the ultimate marine holding tank, engineered for maximum strength and a custom fit. These custom marine water holding tanks are manufactured as seamless, one-piece units, designed to keep water safe from contamination and leaks.
Each strong, durable tank is customized to fit your specific dimensions, featuring spin-weld fittings for precise, leak-free plumbing connections. Molded from FDA-approved virgin polyethylene resins, our high-quality marine tanks are ideal for boat water tanks, graywater systems, RV tanks, ballast tanks, and more.
- ✓ FDA & U.S. Coast Guard Compliant
- ✓ Custom-Built to Your Exact Dimensions
- ✓ Seamless One-Piece Roto-Molded Polyethylene
- ✓ Spin-Weld Fittings for Leak-Free Connections
Marine Holding Tanks
We are committed to providing the highest-quality marine tanks on the market. Designed as seamless, one-piece units, our marine tanks are both durable and practical. Seamless construction prevents cracking or weakening over time.
Made from FDA-approved virgin polyethylene resin and rotationally molded, our tanks provide the best possible solution for storing water in boats and marine vessels, including yachts, sailboats, and deep-sea fishing boats. Each tank includes female NPT openings positioned on one end for easy compatibility with a variety of marine plumbing systems.
Our plastic marine holding tanks comply with both FDA Regulation CFR 177.1520 and U.S. Coast Guard Standards, ensuring safe potable water storage for marine use. Each custom tank features 3/8-inch thick walls to ensure extended service life. Our knowledgeable team can help you find the perfect fit for your marine holding tank!
Cost-effective and eco-friendly, our custom holding tanks are fitted with spin-weld fittings to ensure a perfect, leak-free installation.
Marine Holding Tank Specifications
- ✓ Material: FDA-approved virgin polyethylene resin, rotationally molded
- ✓ Construction: Seamless, one-piece tank body
- ✓ Fittings: Female NPT openings; optional spin-weld fittings
- ✓ Compliance: FDA Regulation CFR 177.1520 and U.S. Coast Guard Standards
- ✓ Sizing: Fully custom-built to your dimensions and plumbing layout
- ✓ Not Suitable For: Gasoline or fuel storage
Why Use Rotational Molding for Marine Water Tanks?
Rotational molding is an ideal fabrication process for marine water tanks due to its strength and seamless construction. In this process, virgin polyethylene resin is heated inside a closed, hollow mold to create a seamless one-piece tank.
The resin is heated to temperatures between 260°C and 370°C, evenly coating the mold surface. Centrifugal force during rotation ensures a smooth, watertight product with uniform wall thickness. Rotationally molded tanks have a longer life expectancy than other freshwater tanks and meet all potable water safety specifications.
Our Marine Water Tank Ordering Process
We are committed to making your marine water tank ordering process smooth and efficient. Our custom tanks are delivered without pre-drilled holes, providing a blank canvas to place fittings exactly where you need them. Custom boat water tanks can also be rotated or positioned to fit your unique installation space. Here’s how the process works:
- Complete a tank drawing with your specific dimensions and specifications.
- Our team reviews your drawing and contacts you with suggestions and feedback to ensure the best possible tank fit.
- We collaborate with you to finalize the design and promptly process your order.
- Guidance available: if you're unsure about any details, our team is happy to guide you through the design process to ensure a perfect fit.
*Please note: Mounting straps are not included with the tank, and it is not intended for gasoline or fuel storage. If you require a different type of tank, our team can help you find the perfect custom solution.
Marine Water Tank Accessories
We offer custom boat water tanks designed to fit your exact dimensions and location requirements. Spin-weld fittings can also be installed upon request for strong, permanent plumbing connections. Whether you need a unique size, shape, or plumbing configuration, we help ensure your project’s success. Our marine water tanks are fully customizable to meet your application’s specific needs.
Polyethylene fittings for graywater and potable water tanks are produced using a spin-welding process. This strong, durable method ensures fittings that will not leak or break under pressure. Each fitting is custom-welded to your specific tank, ensuring precise alignment and a watertight connection.
We also offer a variety of compartment options, including rounded-corner open-ended, square-corner open-ended, and square-corner top-and-end compartments, available in a wide range of sizes.
Battery boxes are also available to securely store your marine batteries. These boxes prevent battery tipping, accidental shorting, and exposure to corrosive elements.
Sustainable Custom Plastic Marine Storage
Custom plastic marine holding tank gives you a sustainable solution for environmentally friendly water storage. Manufactured with non-toxic material, water tanks have a low carbon emission during their life cycle. Our tanks can withstand corrosion, are leak proof, resist UV damage, and last longer than other boat water tanks. Reduce your carbon footprint with our flexible, cost-effective plastic marine tanks.
No matter which marine water tank you choose, we are committed to customizing the exact size, shape, or capacity you need. Let our team help you decide with customizing your perfect water tank.
Marine Holding Tank Frequently Asked Questions
Yes. Our custom marine holding tanks are commonly used for boat fresh water storage, graywater tanks, RV tanks, ballast tanks, and other non-fuel applications. The roto-molded tanks are made from FDA-approved virgin polyethylene, providing a corrosion-resistant, leak-resistant option for a variety of uses. When sized and installed correctly, these marine water tanks provide long-lasting performance and can be a cost-effective alternative to many traditional tank designs.
Spin-weld fittings create a strong, permanent connection between the fitting and the tank wall. During the spin welding process, a polyethylene fitting is rotated against the tank while controlled pressure is applied. The surface plastic softens and bonds together, forming a single fused joint instead of a glued or threaded connection. This helps reduce the risk of leaks or broken fittings over time and allows us to place connections where they best fit your marine plumbing layout. The process is efficient, repeatable, and well suited for polyethylene marine tanks.
