China Rubber Flexible Fire Hose Couplings - Reliable Suppliers & Factory for Vibration Isolation and Pipe Connection
Key Features & Benefits
Quick & Tool-Free Installation
Connects to pipes with simple tightening of 304/301 stainless steel clamps, cutting installation time by over 70% compared to flanged joints.
Multi-Displacement Compensation
Absorbs axial, lateral, and angular movements caused by thermal expansion, foundation settlement, or equipment vibration, preventing pipe stress and leakage.
Vibration & Noise Reduction
The high-elastic rubber body effectively isolates pump/compressor vibrations and reduces fluid-borne noise in HVAC, plumbing, and industrial systems.
Leak-Proof Self-Sealing Design
Double-lip rubber seals conform tightly to pipe outer walls, creating a reliable, pressure-resistant seal without gaskets.
Corrosion & Chemical Resistance
Available in EPDM, Neoprene, and NBR rubber compounds to suit water, wastewater, mild chemicals, and oil applications.
Universal Pipe Compatibility
Fits PVC, cast iron, steel, and copper pipes, ideal for repair projects or mixed-material piping runs.
Product Specifications
| Parameter | Details |
|---|---|
| Available Sizes | 1.5"–8" (custom sizes available) |
| Working Pressure | Up to 1.6 MPa (custom higher-pressure options) |
| Temperature Range | -30°C to +120°C (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 |
Applications
- 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
Packaging & Delivery
- Standard export carton with anti-scratch protection
- Custom labeling and OEM/ODM services available
- Fast lead time for standard sizes (5–7 days)
- Bulk order discounts for project-based purchases
Why Choose Us?
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!
Frequently Asked Questions (FAQ)
What pipe materials are these flexible rubber couplings compatible with?
Our flexible couplings feature universal pipe compatibility. They connect seamlessly to PVC, cast iron, steel, and copper pipes, making them ideal for both new installations and mixed-material piping repairs.
Which rubber compound should I choose for my application?
We offer EPDM for standard water, wastewater, and mild outdoor chemical applications; Neoprene for general purpose weathering resistance; and NBR for oil-resistant requirements. Our sales team can help you select the best option.
Do these couplings require special tools for installation?
No. These couplings are designed for quick and tool-free installation. You only need to tighten the integrated 304/301 stainless steel clamps to achieve a secure, leak-proof seal, saving over 70% of installation time.
How do these couplings handle thermal expansion and vibration?
The high-elasticity rubber body provides multi-displacement compensation, absorbing axial, lateral, and angular movements caused by thermal changes. It also isolates vibrations and reduces noise from pumps and compressors.
Are custom sizes and configurations available?
Yes. While our standard sizes range from 1.5" to 8", we can manufacture custom sizes, reducing couplings, and end caps to suit your specific project requirements.