No-Hub Coupling for Building Drainage
Product Introduction
No-Hub Coupling is a flexible pipe connector specially designed for gravity flow drainage systems in construction. A gravity flow drainage system means wastewater, rainwater or sewage flows downward naturally by its own weight, without any pump pressure. This coupling is mainly used to connect plain-end cast iron pipes, PVC pipes and HDPE pipes in building drainage systems. It is composed of a stainless steel clamp and an EPDM rubber gasket, which can realize a safe, tight and durable pipe connection without hubs or sockets.
Features & Advantages
- Fast and easy installation, no welding, threading or caulking needed
- Flexible connection allows slight deflection, angular and axial displacement
- Excellent sealing, leak-proof and odor-proof performance
- Good seismic resistance and settlement adaptability
- Long service life, low maintenance and wide compatibility
- Only suitable for gravity flow drainage systems (non-pressure pipelines)
Applications
- Building sanitary drainage, waste and vent pipelines
- Rainwater downpipes and roof drainage systems
- High-rise residential, commercial buildings, hospitals and hotels
- Building renovation, reconstruction and seismic area projects
Specifications
Suitable pipe diameters: DN40 to DN300
Working conditions: gravity flow, non-pressure









