IAPMO
International Association of Plumbing and Mechanical Officials
Listings referenced by the Uniform Plumbing Code.
Search IAPMO listingsCertifications / Codes / Standards
Codes &
Standards
Tested. Listed. Accepted. Fernco couplings and connectors are tested to ASTM, CSA and CISPI standards and listed by IAPMO, ICC-ES and CSA Group. Find your product, then verify the listing at the source.
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Each link opens the agency's own directory, so you can confirm a listing without taking our word for it.
ICC-ES
International Code Council Evaluation Service
PMG listings used with the International Plumbing and Residential Codes.
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CSA
CSA Group, Canadian Standards Association
Certified to CSA B602 for use under the National Plumbing Code of Canada.
Search CSA certificationAccepted under the model codes.
IPCInternational Plumbing Code
UPCUniform Plumbing Code
IRCInternational Residential Code
NPCNational Plumbing Code of Canada
Find the standard for your product.
| Product | Category | Standards |
|---|---|---|
| Flexible Couplings1001, 1002, 1003, 1004, 1006, 1051, 1055, 1056 Series | Couplings | ASTM D 5926ASTM C 1173CSA B602 |
| Proflex Shielded Specialty Couplings | Couplings | ASTM C 1460ASTM C 564CSA B602 |
| Standard No Hub Couplings | Couplings | ASTM C 564ASTM C 1277CISPI 310CSA B602 |
| Medium Duty and Heavy Duty No Hub Couplings | Couplings | ASTM C 564ASTM C 1540CISPI 310CSA B602 |
| Shear Ring and Strong Back Couplings | Couplings | ASTM D 5926ASTM C 1173CSA B602 |
| Multi-Tite Pipe Gaskets | Gaskets | ASTM C 564 |
| Expansion Joints, Tubular Connectors, Drain and Trap Connectors | Connectors | ASTM D 5926CSA B602 |
| Flexible Toilet Seals | Connectors | ASTM A 1045 |
| QwikSeal | Manhole connectors | ASTM C 923 |
| Specialty connectors and adapters1059, 1060, 1070 Series, CMA Debris Traps, Dishwasher Connectors, Donuts, Downspout Connectors, Flexible Traps, Hose Grips, LDC, LDCX, LDCMA, QT and QL, Tap Saddles, Utility Connectors, Qwik Caps, Western Series Couplings | Connectors | ASTM D 5926 |
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What each standard covers.
Plain-language summaries. The full text is published by each standards body.
- ASTM C 1173
- Flexible transition couplings for underground piping systems.
- ASTM C 1460
- Shielded transition couplings joining dissimilar DWV pipe and fittings above ground.
- ASTM C 1277
- Shielded couplings joining hubless cast iron soil pipe and fittings.
- ASTM C 1540
- Heavy duty shielded couplings joining hubless cast iron soil pipe and fittings.
- ASTM C 564
- Rubber gaskets for cast iron soil pipe and fittings.
- ASTM D 5926
- PVC gaskets for DWV, sewer, sanitary and storm plumbing systems.
- ASTM A 1045
- Flexible PVC gaskets used to connect toilets to the sanitary drainage system.
- ASTM C 923
- Resilient connectors between concrete manhole structures, pipes and laterals.
- CISPI 310
- Couplings for use with hubless cast iron soil pipe and fittings.
- CSA B602
- Mechanical couplings for drain, waste, vent and sewer pipe.
- AIS / BABA
- American Iron and Steel and Build America, Buy America requirements for federally funded water projects.See which product categories comply or the EPA AIS requirement.
AIS and BABA compliance.
Which product categories meet American Iron and Steel and Build America, Buy America requirements for federally funded water projects. Effective April 7, 2026.
- Standard Flexible Couplings
- CompliantExcludes 16 in. and above
- Proflex Specialty Couplings
- Compliant
- Strong Back RC Couplings
- CompliantExcludes 16 in. and above, and 5000 Series
- XL Couplings
- Compliant
- Tee and Wye Tap Saddles
- CompliantExcludes Tap Saddle Pressure Kit
- Qwik Tees and Ells
- Compliant
- Plastic Socket Couplings
- Compliant
- Pipe Sleeves
- Compliant
- Expansion Joints
- Compliant
- Eccentric Bushings and Couplings
- CompliantExcludes 16 in. and above
- Water Well Debris Traps
- CompliantExcludes 16 in. and above
- Western Series Center Stop
- Compliant
- Qwik Caps
- Compliant
- Drain and Trap Connectors
- Compliant
- HULK
- Not compliant
- Chemical Couplings
- Not compliant
- Dual Puddle Flange
- Not compliant
- QwikSeal
- Not compliant
- No Hub Couplings
- Not compliant
- Ultra-Rib Sewer Pipe Couplings
- Not compliant
- Large Diameter Couplings
- Not compliant
- Custom Large Diameter Debris Caps
- Not compliant
- Flap Valves
- Not compliant
Standard Flexible Couplings and Strong Back RC Couplings (worm gear 1000 Series) in 16 in. and above are excluded from the compliant list, but remain available under the 6000 Series. Confirm the current list before specifying: AIS and BABA scope list (PDF).
International approvals.
Held outside North America. Contact your regional Fernco office for certificates.
- United Kingdom
BSI Kitemark, ConstructionWIS 4-41-01, Certificate KM 33192- United Kingdom
- BSI Kitemark, Clay PipeBS EN 295, Certificate KM 22943
- Germany
- DIN
- Denmark
- Godkendelse
- Finland
- Ympäristöministeriön tyyppihyväksyntäpäätösMinistry of the Environment type approval
- Norway
- Godkjenningsnemnda for sanitærmateriell
- Sweden
- TypgodkännandebevisType approval certificate
- New Zealand
- BRANZ Appraisal Certificate
- Australia / New Zealand
- AS/NZS 4327
