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Alpha 42 Gallon RV Fresh Water Tank - 833BLANK
Upgrade your RV's fresh water storage with the Alpha 833BLANK, a premium 42-gallon fresh water tank engineered to meet or exceed OEM standards. This rotational molded tank features FDA-approved polyethylene construction, seamless one-piece design, and superior durability that outlasts factory-installed tanks. With low-profile dimensions of 48" x 24" x 9", this tank maximizes capacity while fitting in tight vertical spaces.
Why Choose the Alpha 833BLANK Fresh Water Tank?
FDA-Approved Polyethylene for Safe Drinking Water
Your family's health matters. The 833BLANK is crafted from high-quality, FDA-approved polyethylene that's specifically certified for safe drinking water storage. Unlike some factory tanks that use questionable materials, this Alpha tank ensures your water stays clean, fresh, and safe to drink mile after mile.
Seamless One-Piece Rotational Molded Construction
Engineered without seams, joints, or weak points, this rotational molded tank delivers superior strength and leak-proof reliability. The seamless construction eliminates the failure points common in welded or multi-piece tanks, giving you peace of mind that your water stays where it belongs.
Stain, Corrosion, and Rust Resistant
Built to last for years of hard use, the 833BLANK resists stains, corrosion, and rust even in harsh conditions. The durable polyethylene material stays clean and functional season after season, ensuring your water stays fresh and your tank stays dependable.
Low-Profile Design for Tight Spaces
With just 9 inches of height, this 42-gallon tank is perfect for installations where vertical clearance is limited. The 48" x 24" footprint provides generous capacity while fitting into spaces where taller tanks simply won't work.
Superior to Factory-Installed Tanks
Many RV manufacturers cut corners with thin-walled, inferior tanks. The Alpha 833BLANK is built tougher than typical OEM tanks, offering enhanced durability and longevity that makes it the smart choice for replacements or upgrades.
Technical Specifications
- Part Number: 833BLANK
- Capacity: 42 gallons
- Dimensions: 48" Length x 24" Width x 9" Height
- Material: FDA-approved polyethylene
- Construction: Seamless rotational molded one-piece design
- Tank Type: Fresh water storage
- Weight: Lightweight yet durable construction
- Dimensional Weight: 62 lbs
- SKU: 833BLANK
- Barcode: 779833000005
- Manufacturer: Alpha Systems
- Condition: Brand new OEM quality
Perfect Applications for This Fresh Water Tank
- RV and motorhome fresh water storage replacement
- Fifth wheel and travel trailer water system upgrades
- Horse trailer fresh water supply
- Marine vessel potable water storage
- Off-grid cabin and tiny home water systems
- Emergency water storage for mobile applications
- Custom RV builds requiring low-profile tanks
Installation and Compatibility
The Alpha 833BLANK is designed as a direct replacement for OEM fresh water tanks in many RV models. Before ordering, measure your existing tank compartment to ensure proper fitment. The low 9-inch height makes this tank ideal for under-floor installations, basement storage areas, or any location where vertical space is at a premium.
Installation requires basic plumbing skills and standard RV water system fittings. The tank features standard inlet and outlet ports compatible with most RV fresh water systems. Professional installation is recommended for optimal performance and warranty compliance.
Comparison: Find Your Perfect Alpha Fresh Water Tank Size
| Model | Capacity | Dimensions (L x W x H) | Best For | View Details |
|---|---|---|---|---|
| 833BLANK | 42 gallons | 48" x 24" x 9" | Low-profile, tight vertical spaces | Current Product |
| 502BLANK | 42 gallons | 48" x 24" x 12" | Same footprint, more vertical clearance | View Details → |
| 388BLANK | 40 gallons | 39" x 18" x 14" | Compact footprint, smaller RVs | View Details → |
Pro Tip: Measure your tank compartment carefully before ordering. Account for inlet/outlet fittings and allow clearance for installation and removal. The 833BLANK's low-profile design makes it ideal for under-floor installations.
Explore More Fresh Water Tank Options
Browse our complete selection of 40 Gallon RV Fresh Water Tanks or shop all RV Fresh Water Tanks to find the perfect capacity for your needs.
What RV Owners Are Saying
With a 4.6 out of 5-star rating based on 5 verified customer reviews, the Alpha 833BLANK consistently earns praise for its quality construction, leak-proof performance, and superior durability compared to factory tanks. Customers love the peace of mind that comes with FDA-approved materials and authentic Alpha quality.
Frequently Asked Questions
Is this tank FDA-approved for drinking water?
Yes, the 833BLANK is manufactured from FDA-approved polyethylene specifically certified for safe potable water storage.
What are the exact dimensions of this tank?
The tank measures 48 inches long, 24 inches wide, and 9 inches tall, making it ideal for low-profile installations.
Will this tank fit my RV?
The 833BLANK is designed as a replacement for many OEM fresh water tanks. Measure your existing tank compartment to confirm fitment before ordering.
Is this tank seamless or does it have welded seams?
This is a seamless one-piece rotational molded tank with no welds or joints, providing superior strength and leak-proof reliability.
How much does this tank weigh when filled?
When filled with 42 gallons of water, the total weight will be approximately 350 pounds (42 gallons x 8.34 lbs/gallon plus tank weight).
Can this tank be used for marine applications?
Yes, the FDA-approved polyethylene construction makes this tank suitable for RVs, horse trailers, and marine vessels requiring potable water storage.
Why Buy from Elkhart RV Parts?
- 100% Authentic OEM Parts: We sell only genuine Alpha products - never knockoffs or imitations
- Expert Product Knowledge: Our team knows RV water systems inside and out - use our AI Live Chat for instant assistance
- Fast Shipping: Most orders ship within 1-2 business days
- 30-Day Return Policy: Shop with confidence knowing you're protected
- Authorized Alpha Dealer: Factory-backed quality and support
Upgrade Your RV Fresh Water System Today
Replace your worn-out factory tank with the Alpha 833BLANK - 42 gallons of FDA-approved, leak-proof fresh water storage built to last. Low-profile design, seamless construction, and authentic OEM quality.
Questions about fitment or installation? Use our AI Live Chat for expert guidance!
| Product type | Fresh Water Tank |
|---|
- What is the capacity of the alpha fresh water tank? The Alpha fresh water tank has a capacity of 42 gallons.
- What materials are used to make this water tank? This water tank is made from high-quality, durable polyethylene that is FDA-approved for safe drinking water storage.
- Is the construction of the tank leak-proof? Yes, the tank features seamless one-piece construction without seams or joints, ensuring superior strength and leak-proof reliability.
- Can this water tank be used for rvs and marine vessels? Yes, it is designed to be compatible with RVs, horse trailers, and marine vessels as a long-lasting water storage solution.
- Is the tank resistant to stains, corrosion, and rust? Yes, the Alpha fresh water tank is stain, corrosion, and rust resistant, ensuring it stays clean and functional over time.
Factory-Fresh OEM Parts — the same brands installed in new RVs straight from Elkhart. Genuine, name-brand components made to order — never generic, never outdated. Sourced directly from the original RV manufacturers for perfect fit and factory-level quality.

