No-Hub Couplings
Engineered specifically for no-hub cast iron pipe-to-pipe connections with a shielded design built for reliable sealing performance.
Built for Cast Iron to Cast Iron
Fernco No-Hub Couplings are engineered specifically for connecting no-hub cast iron pipe of compatible diameters.
The patented shield design transfers clamping pressure across the gasket and pipe, helping create a positive and reliable connection without the traditional hub-and-spigot joint.
Purpose-Built for No-Hub Cast Iron
Fernco No-Hub Couplings are designed specifically to join compatible no-hub cast iron pipe, providing a shielded connection engineered around the requirements of cast iron systems.
Engineered Into Every Connection
The shield, gasket and clamp system work together to distribute pressure and maintain a dependable seal.
Bi-Directional Shield
Patented corrugation applies sealing pressure in both parallel and transverse patterns across the gasket and pipe.
Beaded Gasket
The elastomeric gasket features strategically positioned grooves and beads designed to provide sealing pressure and holding power.
Interlocking Clamps
One-piece screw housings mechanically interlock with the band, eliminating leak paths associated with staked or welded clamp construction.
Floating Eyelets
Floating eyelets allow the clamp, band and shield to move independently to help prevent shield crimping.
Cast Iron Connection
Designed specifically for joining compatible no-hub cast iron pipe to cast iron pipe.
Stainless Steel Construction
Stainless steel shield and clamp components provide durable performance across plumbing applications.
Choose the Right Duty Level
Fernco No-Hub Couplings are available in Standard, Medium and Heavy Duty configurations to meet different installation requirements.
Standard Duty
- NH Series
- 5/16" hex-head screw
- 60 in.-lbs. installation torque on most sizes
- Available in straight and reducing configurations
Medium Duty
- MD Series
- Distinctive yellow shield
- 5/16" hex-head screw
- 80 in.-lbs. installation torque
Heavy Duty
- HD Series
- Distinctive green shield
- 3/8" hex-head screw
- 80 in.-lbs. installation torque
- Heavier gauge stainless steel construction
Specifications
Standard Duty
- Conforms to CISPI 310
- Couplings comply with ASTM C1277
- Gaskets meet ASTM C564 requirements
Medium & Heavy Duty
- Conform to CISPI 310
- Comply with ASTM C564 and ASTM C1540
- IAPMO File #3198
- Commonwealth of Massachusetts CMR-248
- City of New York MEA 253-98-E
- Maximum Test Pressure: 4.3 PSI (29.6 KPA)
Models & Sizes
Select a duty level below to view available sizes, configurations and installation torque.
| Part No. | Size | Clamps Per Coupling | Install Torque (Inch Pounds) |
|---|---|---|---|
| NH-150 | 1-1/2" | 2 | 60 |
| NH-22 | 2" | 2 | 60 |
| NH-33 | 3" | 2 | 60 |
| NH-44 | 4" | 2 | 60 |
| NH-55 | 5" | 4 | 60 |
| NH-66 | 6" | 4 | 60 |
| NH-88 | 8" | 4 | 60 |
| NH-1010 | 10" | 4 | 60 |
| NH-1212 | 12" | 6 | 120 |
| NH-1515 | 15" | 6 | 120 |
| Part No. | Size | Clamps Per Coupling | Install Torque (Inch Pounds) |
|---|---|---|---|
| NH-215 | 2" x 1-1/2" | 2 | 60 |
| NH-32 | 3" x 2" | 2 | 60 |
| NH-42 | 4" x 2" | 2 | 60 |
| NH-43 | 4" x 3" | 2 | 60 |
| Part No. | Size | Clamps Per Coupling | Install Torque (Inch Pounds) |
|---|---|---|---|
| MD-150 | 1-1/2" | 4 | 80 |
| MD-22 | 2" | 4 | 80 |
| MD-33 | 3" | 4 | 80 |
| MD-44 | 4" | 4 | 80 |
| MD-55 | 5" | 6 | 80 |
| MD-66 | 6" | 6 | 80 |
| MD-88 | 8" | 6 | 80 |
| MD-1010 | 10" | 6 | 80 |
| Part No. | Size | Clamps Per Coupling | Install Torque (Inch Pounds) |
|---|---|---|---|
| HD-150 | 1-1/2" | 4 | 80 |
| HD-22 | 2" | 4 | 80 |
| HD-33 | 3" | 4 | 80 |
| HD-44 | 4" | 4 | 80 |
| HD-55 | 5" | 6 | 80 |
| HD-66 | 6" | 6 | 80 |
| HD-88 | 8" | 6 | 80 |
| HD-1010 | 10" | 6 | 80 |
Need Help Selecting a No-Hub Coupling?
Tell us the cast iron pipe size and installation requirements and our team can help identify the appropriate Standard, Medium or Heavy Duty No-Hub configuration.
Contact Fernco