- Made from flexible PVC
- Designed to resist corrosion
- Can be used with cast-iron, plastic, copper and steel
- See More Details
Frequently Bought Together
Price:
$678
Product Overview
Fernco Couplings have earned a reputation for consistent, superior performance, giving you full confidence in their quality and reliability. The dimensional flexibility of Fernco couplings ensures leak-proof pipe seals on virtually any pipe material. All flexible couplings are clearly marked with part number, size, and pipe material that the coupling will connect to.
- Flexible PVC construction
- 300-series stainless-steel clamps resist corrosion and offer efficient seals
- For sewer and DWV piping
- Compatible with cast iron, plastic, copper, lead and steel piping
- Provides positive seals for drain connections
- Mechanical connection type
- Underground rated
- Maximum working pressure of 4.3 psi
- Resists chemicals, ultraviolet rays and fungus growth
- Band slots for great flexibility
- Fast and easy installation with a screwdriver, nut driver or socket wrench (sold separately)
- Note: product may vary by store
Info & Guides
Product Overview
- Made from flexible PVC
- Designed to resist corrosion
- Can be used with cast-iron, plastic, copper and steel
Compare Similar PVC Fittings
|  |  |  | |
| Brand | Fernco | Fernco | ||
| Name | 3 in. x 3 in. PVC DWV Mechanical Flexible Coupling | 3 in. x 1-1/2 in. DWV Flexible PVC Coupling | 4 in. x 3 in. PVC DWV Mechanical Flexible Coupling | 4 in. Clay x 3 in. DWV Flexible PVC Coupling |
| Price | $678 | $715 | $919 | $945 |
| Ratings | (330) | (117) | (330) | (345) |
| Fitting 1 size | 3" | 1-1/2" | 3" | 3" |
| Fitting or Connector Type | Coupling | Coupling | Coupling | Coupling |
| Schedule Type | Schedule 40 | Schedule 40 | Schedule 40 | Schedule 40 |
| Pack Size | 1 | 1 | 1 | 1 |
| Application | Non-Potable Water,Sewage | Non-Potable Water,Sewage | Non-Potable Water,Sewage | Non-Potable Water,Sewage |
| DWV | DWV | DWV | DWV | DWV |
| Connectivity | Compression | Compression | Compression | Compression |
| Features | Corrosion Resistant,Flexible,Lead Free,Removable,UV Resistant,Underground Rated,Underground Use | Corrosion Resistant,Flexible,Lead Free,Removable,UV Resistant,Underground Rated,Underground Use | Corrosion Resistant,Flexible,Lead Free,Removable,UV Resistant,Underground Rated,Underground Use | Corrosion Resistant,Flexible,Lead Free,Removable,UV Resistant,Underground Rated,Underground Use |
| View Product | View Product | View Product | View Product |
Compare Similar PVC Fittings
| | | | |
| Brand | Fernco | Fernco | ||
| Name | 3 in. x 3 in. PVC DWV Mechanical Flexible Coupling | 3 in. x 1-1/2 in. DWV Flexible PVC Coupling | 4 in. x 3 in. PVC DWV Mechanical Flexible Coupling | 4 in. Clay x 3 in. DWV Flexible PVC Coupling |
| Price | $678 | $715 | $919 | $945 |
| Ratings | (330) | (117) | (330) | (345) |
| Fitting 1 size | ||||
| Fitting or Connector Type | ||||
| Schedule Type | ||||
| Pack Size | ||||
| Application | ||||
| DWV | ||||
| Connectivity | ||||
| Features | ||||
| View Product | View Product | View Product | View Product |
Specifications
Dimensions
Double Fitting Size
3" x 3"
Fitting 1 size
3"
Fitting 2 size
3"
Product Length (in.)
4.50 in
Details
Application
Non-Potable Water,Sewage
Color Family
Black
Color/Finish
BLACK
Compatible Pipe Material
Multi-Purpose
Connection 1
Mechanical
Connection 2
Mechanical
Connectivity
Compression
DWV
DWV
Features
Corrosion Resistant,Flexible,Lead Free,Removable,UV Resistant,Underground Rated,Underground Use
Fitting or Connector Type
Coupling
Fitting/ Connector Collection
PVC
Material
PVC
Maximum working pressure (psi)
4.3
Maximum Working Temperature (F)
120
Pack Size
1
Pipe or Fitting Product Type
Fittings & Connectors
Product Weight (lb.)
0.80 lb
Reducing Fitting
No
Returnable
180-Day
Schedule Type
Schedule 40
Warranty / Certifications
Manufacturer Warranty
Defects in workmanship or materials for a period of one year and will replace any defective product returned within that time period.
Questions & Answers
50Questions24Answers
Will this seal around a thin wall sewer pipe which is .25 in smaller in diameter than sch 40.
Asked by Neal3d February 24, 20211
AnswerYes, use a torque wrench to tighten down.
Should this coupling connect a 4” PVC pipe (O.D. approx 4.5”) with a 4” cast iron pipe that has a...
Asked by crk530 February 8, 20212
AnswersYes, this is what this coupling is designed to fit.
Can this be used outside or will the tighteners eventually rust?
Asked by Jim January 29, 20216
AnswersYes, it can be used outside. Mine are outside and exposed as part of a radon mitigation solution. The clamps are stainless steel. Looking good so far.
Can this go over a hub?
Asked by Nene January 21, 20213
AnswersYou would need to measure the hub. This coupling is intended to connect (or repair) a PVC pipe with an INSIDE diameter of 4 inches. The outside diameter of this pipe is 4.5", so if your hub is in the 4-3/8 to 4-1/2 inch range, you should be able to fit it on securely enough.
I have a 4 inch cast iron hub joint. I have removed most of the lead around the joint. The 4 inch...
Asked by Stilliron November 16, 20201
AnswerPlease contact Fernco Customer Service with your exact pipe dimensions and they can give you the part #'s for this type of application.
I have an old cast iron drain pipe that measures 4 inches that has ben cut. Can I telescope a 3 i...
Asked by castiron November 15, 20202
AnswersThe pipes only have to butt up together.
Can the Coupling without the stainless steel band just the rubber with the two clamps be used underground covered in concrete?
Asked by Brad October 23, 20203
AnswersYes, as long as the pipes are stable and can't be moved by the pouring of the concrete, and the clamps are securely tightened.
Can this be bury underground?
Asked by Homer October 14, 20202
Answersyes, with no problems.
How much misalignment between connecting pipes can this coupling tolerate? Can it tolerate at le...
Asked by luis September 21, 20203
AnswersWe do not recommend any deflection when installed.
Does this product pass inspection in Texas if used underground for sewage waste disposal?
Asked by G9 September 9, 20201
AnswerYou would need to contact a Plumber in your area for specifics on what is allowed in your area.
Customer Reviews
Jan 16, 2021
Innacurate Description
Its clealry marked as 4”. It is very much 5”. Luckily I live close to store but still a huge annoyance and waste of my time. I don’t often need parts like this. Is this some sort of twisted “normal” industry standard of measurement? Like a 2x4 NOT actually being 2x4?
by fergweb
Apr 30, 2020
These worked exactly the way I needed them to. I...
These worked exactly the way I needed them to. I was worried that they’d be too tight when I slid them on so that I’d have a rough time of it, but they were just slightly larger and slid onto my old drain pipe without much effort. Highly recommended. Sure beats smelly glue and primer!
by Colin
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