China Rubber Flexible Fire Hose No Hub Coupling Suppliers | Factory Direct Solutions for Pipe Connections
Connects to pipes with simple tightening of 304/301 stainless steel clamps, cutting installation time by over 70% compared to flanged joints.
Absorbs axial, lateral, and angular movements caused by thermal expansion, foundation settlement, or equipment vibration, preventing pipe stress and leakage.
The high-elastic rubber body effectively isolates pump/compressor vibrations and reduces fluid-borne noise in HVAC, plumbing, and industrial systems.
Double-lip rubber seals conform tightly to pipe outer walls, creating a reliable, pressure-resistant seal without gaskets.
Available in EPDM, Neoprene, and NBR rubber compounds to suit water, wastewater, mild chemicals, and oil applications.
Fits PVC, cast iron, steel, and copper pipes, ideal for repair projects or mixed-material piping runs.
| Parameter | Details |
|---|---|
| Available Sizes | 1.5"โ8" (custom sizes available) |
| Working Pressure | Up to 1.6 MPa (custom higher-pressure options) |
| Temperature Range | -30ยฐC to +120ยฐC (varies by rubber compound) |
| Materials | - Body: Natural rubber/PVC - Clamps: 301/304 stainless steel |
| Types | Straight coupling, reducing coupling, end cap |
| Certifications | UPC/ISO 9001 |
- Building plumbing and drainage systems
- HVAC and cooling tower piping
- Pump inlets/outlets and mechanical equipment connections
- Wastewater treatment plants
- Industrial process piping with mild chemical exposure
- Emergency pipe repair and retrofitting projects
- Standard export carton with anti-scratch protection
- Custom labeling and OEM/ODM services available
- Fast lead time for standard sizes (5โ7 days)
- Bulk order discounts for project-based purchases
As a professional manufacturer of pipeline accessories, we offer:
- Factory-direct pricing with no middleman markup
- Strict quality control for consistent performance
- Custom engineering support for special applications
- Global shipping to over 50 countries with reliable logistics
Contact our sales team today to request a quote or discuss your project requirements!
A1: They are universally compatible with PVC, cast iron, steel, and copper pipes, making them perfect for repair projects or mixed-material piping configurations.
A2: Yes, they feature a quick, tool-free installation design. You only need to tighten the 304/301 stainless steel clamps, which reduces installation time by over 70% compared to traditional flanged joints.
A3: The standard working pressure is up to 1.6 MPa (with custom higher-pressure options available). The temperature range is -30ยฐC to +120ยฐC, depending on the rubber compound selected (EPDM, Neoprene, or NBR).
A4: Yes, while standard sizes range from 1.5" to 8", we offer custom sizes and custom engineering support to suit specific project requirements. Rubber compounds are available in EPDM, Neoprene, and NBR.
A5: We offer a fast lead time of 5โ7 days for standard sizes. For bulk or custom OEM/ODM orders, please contact our sales team to discuss specific timelines and bulk discounts.