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Alpha 939BLANK RV Holding Tank - 50 Gallon Right Drain Black Water Storage
The Alpha 939BLANK holding tank delivers reliable 50-gallon black water storage capacity with right-side drain orientation and OEM-grade rotational molded construction. This 64" x 32" x 8" holding tank features seamless one-piece design, leak-tested quality assurance, and right drain configuration for RVs with right-side plumbing layouts.
Why Choose the Alpha 939BLANK Holding Tank?
Alpha's 939BLANK holding tank solves the challenge of replacing worn or damaged RV waste tanks with authentic OEM-quality construction. The 50-gallon capacity provides ample black water storage for extended trips, while the rotational molded seamless design eliminates weak points and potential leak areas found in welded tanks.
At 64" long, 32" wide, and 8" tall, this holding tank fits a wide range of RV basement storage configurations. The right drain orientation is designed for RVs where the plumbing connections are positioned on the right side of the tank compartment.
Key Features and Specifications
- Capacity: 50 gallons black water storage
- Dimensions: 64" length x 32" width x 8" height
- Drain Orientation: Right Drain (RH)
- Configuration: Blank (no pre-installed fittings)
- Construction: Rotational molded seamless one-piece design
- Material: High-density polyethylene (HDPE)
- Weight: 98.7 lbs (empty)
- Part Number: 939BLANK (SKU: 939001-RH)
- Manufacturer: Alpha
- Quality Testing: 100% leak-tested before shipping
- Grade: OEM quality - same tanks used in new RV builds
Perfect For These Applications
The 64" x 32" x 8" size with 50-gallon capacity and right drain makes the 939BLANK ideal for:
- Travel trailer black water tank replacement with right-side plumbing
- Class A motorhome waste tank upgrades
- Fifth wheel holding tank repairs
- RVs with right-side drain outlet configurations
- RV restoration projects matching original right drain layout
- Replacement for damaged or leaking right drain holding tanks
- Applications requiring right-side plumbing connections
- Extended trip RVs needing reliable 50-gallon waste storage
Right Drain Orientation - What It Means
The 939BLANK features right drain orientation (RH), which means the drain outlet is positioned on the right side of the tank when viewing from the front. This is critical for proper installation:
- Ensures drain outlet aligns with your RV's existing plumbing
- Matches factory configurations for right-side drain systems
- Eliminates need for custom plumbing modifications
- Provides proper flow and drainage performance
Important: Verify your RV's drain orientation before ordering. If your RV has left-side plumbing, you'll need a left drain (HL) tank instead.
Compare Similar Alpha Holding Tanks
| Model | Capacity | Dimensions (L x W x H) | Drain Side | Part Number | Best For | View Details |
|---|---|---|---|---|---|---|
| 939BLANK | 50 Gallons | 64" x 32" x 8" | Right Drain | 939001-RH | Right-side plumbing systems | Current Product |
| 940BLANK | 50 Gallons | 64" x 32" x 8" | Check specs | 940001CD | Alternative 50-gal option, same size | View |
| VR32659HRBLANK | 62 Gallons | 65.25" x 32" x 9.5" | Right Drain | VR32659HRCD | Larger capacity, right drain | View |
| VR266195HBLANK | 44 Gallons | 61" x 26" x 9" | Check specs | VR266195HCD | Narrower width, compact spaces | View |
Helpful Tip: Always verify your RV's drain orientation before ordering. Right drain (RH) tanks have the drain outlet on the right side. If your RV has left-side plumbing, you need a left drain (HL) tank instead.
Installation and Compatibility
This holding tank ships as a blank unit requiring professional installation. You'll need to:
- Verify right drain orientation matches your RV's plumbing layout
- Drill appropriate holes for drain outlet (right side), vent, and sensor fittings
- Install gaskets and threaded fittings with proper sealant
- Connect to existing RV plumbing system on right side
- Secure tank with appropriate mounting straps or brackets
- Test all connections for leaks before use
Professional installation strongly recommended. Improper installation can lead to leaks, odors, and system failures.
What Makes Alpha Holding Tanks Superior?
Alpha has built a reputation for engineering excellence in the RV industry. Their holding tanks feature:
- Rotational Molded Construction: Seamless one-piece design eliminates weak points and potential leak areas
- OEM Quality Standards: Same tanks used by major RV manufacturers in new builds
- 100% Leak Testing: Every tank is individually submerged and tested before shipping
- High-Density Polyethylene: Superior chemical resistance and durability for waste applications
- Proper Drain Orientation: Right drain configuration ensures compatibility with right-side plumbing systems
- Strict Quality Control: Manufactured to meet all health and safety requirements
- Built for RV Life: Designed to withstand constant movement, vibration, and temperature changes
- Long Service Life: Durable construction provides years of reliable performance
Frequently Asked Questions
What is the capacity of the 939BLANK holding tank?
The Alpha 939BLANK holding tank has a 50-gallon capacity for black water storage. This provides ample waste storage for extended RV trips and reduces the frequency of dump station visits.
What does right drain orientation mean?
Right drain (RH) means the drain outlet is positioned on the right side of the tank when viewing from the front. This must match your RV's plumbing configuration. If your RV has left-side plumbing connections, you need a left drain (HL) tank instead.
What are the dimensions of the 939BLANK?
The 939BLANK measures 64" long x 32" wide x 8" tall. Make sure to measure your RV's tank compartment carefully, allowing extra space for fittings, connections, and mounting hardware.
Is this tank leak-tested?
Yes, every Alpha 939BLANK holding tank is individually submerged and leak-tested before shipping. This rigorous quality control ensures you receive a reliable, problem-free tank ready for installation.
How do I know if I need right drain or left drain?
Check your existing tank's drain outlet location. If the drain is on the right side when facing the tank from the front, you need a right drain (RH) tank like the 939BLANK. If it's on the left side, you need a left drain (HL) tank. Verify before ordering to ensure proper fit.
What's the difference between 939BLANK and 940BLANK?
Both are 50-gallon holding tanks with identical dimensions (64" x 32" x 8"). The 939BLANK has right drain orientation. Check the 940BLANK specifications to confirm its drain orientation before ordering.
Do I need professional installation?
Yes, professional installation is strongly recommended. Installing a holding tank requires drilling precise holes, installing fittings with proper gaskets and sealant, connecting to plumbing systems, and thorough leak testing. Improper installation can lead to serious problems including leaks and odors.
Will this fit my RV?
The 939BLANK fits RVs with tank compartments that accommodate 64" length x 32" width x 8" height, plus clearance for fittings and connections. Most importantly, your RV must have right-side drain plumbing to be compatible with this right drain tank.
Authentic Alpha Parts from Elkhart RV Parts
When you order the 939BLANK from Elkhart RV Parts, you receive 100% authentic Alpha products backed by our commitment to quality. We are an authorized Alpha dealer, ensuring you receive genuine OEM-grade parts with full manufacturer quality standards.
Our team understands RV holding tank systems and can help you select the right tank size and drain orientation for your specific application. Have questions about sizing, drain orientation, or compatibility? Use our AI Live Chat for expert product guidance and technical support.
Order Your Alpha 939BLANK Right Drain Holding Tank Today
Replace your worn or damaged RV holding tank with the reliable Alpha 939BLANK right drain holding tank. With 50-gallon capacity, right-side drain orientation, rotational molded construction, and 100% leak-tested quality, this holding tank delivers the OEM-grade performance you need for years of trouble-free RV adventures.
Ships via freight. Order now for fast delivery of your authentic Alpha holding tank.
| Material | Rotational molded plastic |
|---|---|
| Width (inches) | 32 |
| Height (inches) | 8 |
| Length (inches) | 64 |
| Capacity (gallons) | 50 |
- What are the dimensions of the alpha 50 gallons holding tank? The Alpha 50 Gallons Holding Tank measures 64 inches in length, 32 inches in width, and 8 inches in height.
- Is the alpha 50 gallons holding tank suitable for rv waste management? Yes, this tank is specifically designed for RV waste management and meets all necessary health and safety requirements.
- What material is the holding tank made of? The tank is made using an extra durable rotational molded construction, creating a seamless one-piece tank for superior strength and longevity.
- Does the alpha 50 gallons holding tank come with any quality assurance? Yes, every tank is individually submerged and tested for leaks before shipping to ensure a reliable and problem-free installation.
- Is this holding tank compatible with major rv manufacturers? Yes, these tanks are authentic OEM parts used in new RV builds by major manufacturers, ensuring perfect compatibility and performance.
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.