0102030405
China Suppliers Factory NSF/UPC Certified SS301/304 Stainless Steel No Hub Couplings 1.5-15 for Drain Pipes
Product Introduction
This TJTC no-hub coupling, also called cast iron soil pipe coupling, is certified with NSF, UPC & CSA approvals to meet North American plumbing codes. It is equipped with double stainless steel worm drive clamps on both sides, the serrated steel band can evenly compress the inner EPDM rubber sleeve to form a tight leakproof seal for connecting hubless cast iron drain pipes. Double-clamp design delivers stronger clamping force than single-band types, ensuring stable sealing under ground burial or high-temperature indoor drainage environments. Standard dimensional specifications range from 2" to 12", matching mainstream US cast iron soil pipe sizes.
Material Specification
- Stainless Steel 304 Band Embossed serrated texture and uniform pressure distribution, offering excellent rust prevention performance against damp sewage and underground soil corrosion.
- Internal Sealing Gasket NSF certified EPDM/chloroprene rubber, resistant to aging, chemical erosion from sewage, and temperature fluctuations from -30 ℃ to 100 ℃, in compliance with US drinking water and hygiene standards.
- Fastener Bolts and Nuts 304 stainless steel, treated with anti-corrosion, perfectly suitable for long-term outdoor and underground installation.
Similar Products
- Single Band No-Hub Coupling Only one stainless steel clamp, designed for low-load indoor above-ground drainage with lower cost.
- Transition Coupling One end for cast iron pipe, the other for PVC/ABS plastic pipe, used for mixed-material pipeline conversion.
- Flexible Expansion Coupling With thicker rubber body to absorb pipeline thermal expansion and building settlement displacement.
- Compression Shield Coupling Extra outer steel shield designed for heavy-duty underground burial projects.
Application Scope
Sanitary Drainage System
Primary connection fitting for hubless cast iron drainage pipes in residential buildings, apartments, commercial malls and hotels across USA & Canada. UPC/NSF certification is required for local plumbing inspection approval.
Municipal & Civil Engineering
Underground sewage pipeline connection for municipal drainage, basement waste water discharge and underground parking lot drainage pipelines.
Industrial Wastewater Project
Low-concentration industrial wastewater discharge piping for food processing plants and light manufacturing factories, compatible with acid/alkali dilute sewage due to EPDM rubber chemical resistance.
Certification Notes
- NSF (National Sanitation Foundation) National Sanitation Foundation certification, qualified for potable water & sanitary drainage application.
- UPC (Uniform Plumbing Code) Uniform Plumbing Code certification, mandatory for US local plumbing engineering acceptance.
- CSA (Canadian Standards Association) Canadian Standards Association certification, eligible for Canada market clearance & construction inspection.
Packaging and Transportation
Leave your message
Frequently Asked Questions
What certifications do TJTC no-hub couplings hold?
TJTC no-hub couplings are fully certified with NSF (National Sanitation Foundation), UPC (Uniform Plumbing Code), and CSA (Canadian Standards Association) approvals, meeting all major North American plumbing code requirements.
What materials are used in the construction of these couplings?
The bands, clamps, fastener bolts, and nuts are constructed from high-grade 304 stainless steel for superior rust and corrosion resistance. The internal sealing gasket is made from NSF-certified EPDM/chloroprene rubber.
What temperature range can the EPDM rubber gasket withstand?
The internal EPDM/chloroprene rubber gasket is designed to tolerate extreme temperature fluctuations, operating reliably from -30 ℃ up to 100 ℃.
Why is the double-clamp design better than a single-band type?
The double stainless steel worm drive clamp design delivers significantly stronger and more uniform clamping force compared to single-band types, ensuring a stable, leakproof seal suitable for underground burial and high-demand environments.
What pipe sizes are these couplings compatible with?
TJTC no-hub couplings are available in standard dimensional specifications ranging from 2" to 12", matching all mainstream cast iron soil pipe sizes used in US and Canadian plumbing systems.