Stainless Steel Reinforced Universal Coupling
The HULK
Coupling
One universal sewer and drain repair coupling per nominal size connects most common underground pipe materials with serious strength, wide dimensional coverage, and internally reinforced stainless steel shear rods.
Built for unknown underground connections
One Coupling.
Multiple Pipe Connections.
When the pipe material is uncertain, the HULK keeps the job moving. Its wide dimensional range helps crews connect common sewer and drain pipe materials with one universal coupling per nominal size.
Universal Coupling
One coupling per nominal size connects most pipe materials.
Pipe Materials
Designed for the realities of underground repair work.
Nominal Sizes
Available in the core sizes crews reach for most.
Jobsite Confidence
Built for
Unknown
Connections
When pipe material is not obvious, the HULK eliminates guesswork by connecting most common underground sewer and drain pipe materials with one universal coupling per nominal size.
Internally Reinforced
Stainless Steel
Shear Rods
The HULK is reinforced internally with corrosion-resistant stainless steel rods to help resist pipe shift from soil, traffic, or settlement. That reinforcement is what gives this coupling its muscle where underground connections need it most.
Muscle where it matters most
Below-Ground
Approved
Made for underground sewer and drain repair, the HULK brings heavy-duty construction to tough transitions and repair conditions. Use it when the job calls for a stronger, more versatile connection than a standard repair coupling.
Compliance
Complies with IPC, UPC, ASTM C1173, and CSA B602. U.S. Patent No. D956937.
Selection
HULK Sizing
Start with nominal pipe size, then confirm the outside diameter range before installation.
| Part Number | Nominal Size | O.D. Range |
|---|---|---|
| HULK4 | 4” | 4.20” - 5.60” |
| HULK5 | 5” | 5.30” - 6.70” |
| HULK6 | 6” | 6.20” - 8.00” |
| HULK8 | 8” | 8.40” - 10.15” |
| HULK10 | 10” | 10.50” - 12.75” |
| HULK12 | 12” | 12.50” - 15.30” |
Product Video
See the HULK in Action
Watch how the HULK Universal Coupling handles difficult underground transitions while connecting multiple pipe materials with one coupling per nominal size.
Specs
Built to Spec
Key product details for quick review. Always verify final selection using current Fernco literature and actual pipe outside diameter.
Designed for below-ground transitions, repairs, and unknown pipe material conditions.
Available in HULK4, HULK5, HULK6, HULK8, HULK10, and HULK12.
Connects clay, concrete, ductile iron, Orangeburg, Duriron, cast iron, steel, and plastic.
Internally reinforced to help resist pipe shift from soil, traffic, or settlement.
Complies with key plumbing code and coupling standards.
Patented universal coupling design engineered for underground strength and versatility.
Stop guessing. Bring the HULK.
For underground repairs, unknown materials, and tough transitions, the HULK gives crews a stronger universal coupling built to handle the job.
Back to SizingDownloads
HULK Resources
Get product literature, sales support, and engineering information for the HULK Universal Coupling.
Sales Sheet
Product overview, key benefits, applications, and sizing information.
Download PDF →Trifold Brochure
Distributor and contractor-friendly product overview for the HULK.
Download PDF →Engineering Spec Sheet
Specification support for engineers, municipalities, and submittals.
Download PDF →FAQ
Common Questions
What makes the HULK different from a standard coupling?
What pipe materials can the HULK connect?
Is the HULK approved for underground use?
How do I select the correct HULK size?
What standards does the HULK comply with?
Contact
Need Help with HULK?
Connect with Fernco for product questions, sizing support, or project information.