MULTIGRIP RESTRAINED COUPLING
Multigrip restrained coupling, compliant with EN545 standard.
Description
MULTIGRIP RESTRAINED COUPLING
Product Overview
The Multigrip Restrained Coupling is a versatile connection fitting designed for multiple pipe types including ductile iron, steel, PVC, PE, stainless steel, and AC pipes. This coupling features a mechanical locking system with metal inserts to prevent axial pipe movement, making it ideal for applications requiring reliable joint integrity across different pipe materials.
Key Features
- Multi-Pipe Compatibility: Suitable for ductile iron, steel, PVC, PE, stainless steel, and AC pipes
- Dual Pressure Rating: Suitable for both PN10 and PN16 pressure systems
- Mechanical Locking System: Metal inserts prevent axial pipe movement
- Independent Clamping: Independent clamping on both sides for enhanced security
- Wide Tolerance Range: Accommodates various pipe tolerances
- Corrosion Resistant: Corrosion resistant construction for long-term reliability
- Angular Deflection: ±4° total angular deflection capability
- WRAS Approved: Approved for potable water applications
Technical Specifications
| Standard | EN545 |
| Working Pressure | PN10/PN16 |
| Maximum Temperature | -10°C to +70°C |
| Seal Material | NBR |
| Size Range | DN50 to DN300 |
| Connection Type | Ductile iron, steel, PVC, PE, stainless steel, AC pipes |
| Angular Deflection | ±4° |
| Suitable For | Potable water, neutral liquids, sewage (WRAS approved) |
| Gasket Material | EPDM, NBR or other rubber material |
| Grip Ring Material | Carbon steel |
Material Components
The Multigrip Restrained Coupling consists of 6 main components:
- End Ring: Ductile iron ENGJS450-10 (Material Standard: EN1563)
- Locking Ring: Plastic for secure locking mechanism
- Gasket: EPDM, NBR or other rubber material (Material Standard: EN1563)
- Middle Sleeve: Ductile iron ENGJS450-10 (Material Standard: EN1563)
- Gripper: Carbon steel (Material Standard: EN10025)
- Bolts: Grade 4.8 Carbon steel (Material Standard: ISO 898-1)
Additional Material Options
Bolt Options
- Carbon Steel: Grade 4.8/6.8/8.8 with galvanization/dacromet/teflon coating
- Stainless Steel: SS304/SS316/SS316L/A2/A4 options available
Coating Options
- FBE Coating: Fusion Bonded Epoxy coating available
- Nylon 11 Coating: Advanced protective coating option
Special Features
Mechanical Locking System
- Metal Inserts: Prevent axial pipe movement for enhanced security
- Independent Clamping: Both sides can be clamped independently
- Wide Tolerance Range: Accommodates various pipe manufacturing tolerances
Versatility
- Multi-Material Support: Compatible with 6 different pipe materials
- Universal Application: Ideal for mixed material installations
- Corrosion Resistant: Long-term reliability in various environments
Applications
- Mixed Material Systems: Connections between different pipe materials
- Retrofit Projects: Upgrading existing pipe systems
- Industrial Applications: Process piping with multiple pipe types
- Municipal Projects: Water and wastewater systems with varied materials
- Utility Connections: Interface between different pipe systems
- Maintenance Points: Strategic locations requiring versatile connections
Installation Notes
- Ensure pipes are properly prepared and cleaned before installation
- Follow manufacturer guidelines for proper gripper installation
- Use appropriate torque values for bolt tightening
- Verify pressure rating compatibility with system requirements
- Test connection integrity before system pressurization
- Consider angular deflection limits during installation
- Account for different pipe material properties
Quality Assurance
All Multigrip Restrained Couplings undergo rigorous testing to ensure:
- Pressure integrity at rated working pressures
- Leak-tight performance under various conditions
- Mechanical strength and durability
- Compatibility with multiple pipe materials
- WRAS approval for potable water applications
Please refer to the dimensions table below for specific size and configuration details.
Dimensions Table (MM)
Note: Please note dimensions may vary at our discretion. All measurements are in millimeters (MM).
Dimension Information
OD Range: Each size accommodates a range of outer diameters, providing flexibility for different pipe manufacturing tolerances and material variations. L1 represents the overall coupling length, while L2 represents the length between the ends of the main body.
Multi-Material Compatibility
Versatile Design: The wide OD range for each DN size allows this coupling to accommodate pipes made of ductile iron, steel, PVC, PE, stainless steel, and AC materials, making it ideal for mixed-material installations and retrofit projects.
Installation Flexibility
±4° Angular Deflection: This coupling provides ±4° total angular deflection capability, allowing for installation flexibility and accommodating minor alignment variations while maintaining joint integrity across different pipe materials.
Additional information
| Coupling Type | Multigrip Restrained Coupling |
|---|---|
| Standard | EN545 |
| Working Pressure | PN10/PN16 |
| Maximum Temperature | -10°C to +70°C |
| Seal Material | NBR |
| Size Range | DN50 to DN300 |
| Connection Type | Ductile iron, steel, PVC, PE, stainless steel, AC pipes |
| Angular Deflection | ±4° |
| Suitable For | Potable water, neutral liquids, sewage (WRAS approved) |
| Gasket Material | EPDM, NBR or other rubber material |
| Grip Ring Material | Carbon steel |
