China Suppliers Factory Universal Coupling Gland Type Loose Sleeve Expansion Joint for Axial Displacement Management
The gland type loose sleeve expansion joint, manufactured by top suppliers in China, consists of a loose sleeve telescopic joint along with two spacing short pipes. This essential component is designed to effectively absorb axial displacement and facilitate loose pipe connections under axial pressure and thrust within the permissible displacement range. As a leading factory, we ensure high-quality production standards to meet the diverse needs of our customers. Perfect for various industrial applications, our expansion joints provide durability and reliability, ensuring optimal performance in your systems
The Universal Coupling is a versatile and easy-to-install solution designed to connect pipes of different materials and outside diameters. With a flexible design and wide tolerance range, this coupling ensures a secure, leak-proof joint even when connecting misaligned or dissimilar pipelines.
Manufactured from high-strength ductile iron and coated with anti-corrosion epoxy, the universal coupling is suitable for both underground and above-ground applications. Its robust sealing system, including EPDM or NBR gaskets and stainless steel bolts, ensures excellent performance under varying pressure and temperature conditions.
🔧 Ideal for municipal water supply, sewage systems, irrigation networks, and industrial pipelines — simplifying pipeline repair and maintenance with quick, weld-free installation.
As one of China's leading valve and pipe fitting manufacturers, we deliver reliable, field-proven products for engineering projects worldwide. Our universal couplings are available in a range of diameters and pressure ratings, and meet international standards like ISO 2531 and EN 14525.
Whether for new installation or emergency repairs, our universal coupling offers strong, adaptable, and long-lasting pipe connectivity.
Standard Materials Of Main Parts
NO
Reference
Material
Standard
1
Sleeve
Steel/ductile iron
S235/EN1563
2
End Ring
Ductile iron GGG450-10
En1563
3
Bolt And Nut
Steel 8.8 Dacromet/Zinced
ISO898-1
4
Gasket
EPDM/NBR
EN681-1
5
Coating
FBE/Rilsan Nylon
EN14901
Dimensions: (mm)
Frequently Asked Questions
Q
What types of pipes can the Universal Coupling connect?
The Universal Coupling is designed to connect pipes of different materials and outside diameters, including ductile iron, steel, PVC, HDPE, asbestos cement, and concrete pipes. Its wide tolerance range accommodates misaligned or dissimilar pipelines with ease.
Q
What international standards does the Universal Coupling meet?
Our Universal Couplings comply with internationally recognized standards including ISO 2531 and EN 14525, ensuring reliable performance and compatibility with global engineering project requirements.
Q
What gasket materials are available for the Universal Coupling?
The Universal Coupling is available with EPDM or NBR gaskets conforming to EN681-1. EPDM gaskets are ideal for water supply and outdoor applications, while NBR gaskets are suitable for oil and fuel-related environments.
Q
Is the Universal Coupling suitable for underground installation?
Yes. The Universal Coupling is manufactured from high-strength ductile iron and coated with anti-corrosion epoxy (FBE/Rilsan Nylon per EN14901), making it fully suitable for both underground and above-ground applications in demanding environments.
Q
Does installation require welding or threading?
No. The Universal Coupling is designed for quick and easy installation without welding or threading. This makes it an ideal solution for emergency pipeline repairs and new installations where speed and simplicity are essential.
Q
What diameter ranges and pressure ratings are available?
Our Universal Couplings are available in a wide range of diameters and pressure ratings to suit various pipeline systems, including municipal water supply, sewage systems, irrigation networks, and industrial pipelines. Please contact us with your specific requirements for detailed specifications.
