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Corrosion-Resistant UPVC Double Socket Collar

Standard: EN12842
Size: OD50—OD630
Internal Lining: FBE(Fushion Bonded Epoxy)
External Coating: FBE(Fushion Bonded Epoxy)
Application:
Water Supply, Transmission and Distribution
Water Plant and Sewage Treatment Reservoir Piping
Sewage Collection and Disposal System
Storm Water Drainage System
Irrigation System
Fire Fighting System
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Understanding


The Double Socket Collar for UPVC Pipe represents a highly specialized coupling fitting meticulously engineered to unite two sections of UPVC piping with absolute precision and enduring reliability. Functioning as an integrated mechanical connector, this component features dual, precisely machined sockets that firmly grip the pipe ends, establishing a continuous, leak-proof pathway for critical fluid transfer. Unlike standard universal couplings, this specific collar is tailored exclusively for the unique dimensional and material characteristics of UPVC pipes. By leveraging the inherent strengths of unplasticized polyvinyl chloride, it delivers exceptional operational performance across both low and high-pressure fluid networks. When handling this fitting, operators immediately notice the substantial, well-balanced weight and the smooth, defect-free surface finish that speaks to its rigorous manufacturing process. It serves as an indispensable cornerstone component within complex piping architectures, guaranteeing structural integrity and consistent, uninterrupted flow rates across demanding residential, commercial, and heavy industrial applications.


Core Advantages


Exceptional Sealing Performance

The double socket design creates an impenetrable barrier between pipe sections. This tight interference fit prevents fluid migration even when the network is exposed to aggressively fluctuating system pressures or sudden thermal expansion. This inherent sealing capability drastically reduces installation complexity by eliminating the reliance on secondary liquid sealants or supplementary gaskets in the vast majority of standard deployments. By removing these extra variables, project managers can significantly reduce labor time and eliminate common points of mechanical failure during prolonged operation.


Long-Lasting Durability

Coated with advanced FBE (Fusion Bonded Epoxy) on both internal and external surfaces, the collar presents a formidable defense against aggressive corrosion, mechanical abrasion, and severe environmental degradation. This protective barrier ensures the underlying structure remains completely isolated from corrosive water chemistry, harsh industrial chemicals, and prolonged UV radiation exposure. When properly installed and maintained, the fitting offers a quantifiable operational lifespan extending up to 50 years, delivering an exceptional return on investment for large-scale infrastructure projects that demand generational reliability.


Universal Compatibility & Easy Handling

Engineered for broad applicability, this fitting is fully compatible with standard UPVC pipe dimensions, covering an extensive size range from Φ63mm up to massive Φ800mm diameters. This comprehensive sizing ensures perfect integration into almost any project scope. Furthermore, we provide specialized non-standard dimensional customization to meet the precise matching requirements of unique engineering challenges. Despite its heavy-duty construction, the optimized design facilitates straightforward transportation and effortless on-site handling. The intuitive push-fit socket connection protocol requires no specialized thermal welding training or heavy machinery, accelerating project completion timelines.


Typical Uses


Residential & Commercial Plumbing

Perfectly suited for establishing secure UPVC connections within modern home plumbing infrastructures, including critical kitchen supply lines and bathroom waste management pipelines. Beyond residential spaces, it is heavily utilized in large-scale commercial developments such as corporate office towers, expansive retail malls, and luxury hospitality venues. In these environments, maintaining a reliable, silent, and leak-free water flow is paramount for daily operations, preventing costly water damage and ensuring continuous occupant satisfaction.


Municipal & Industrial Piping

This collar is a fundamental building block for expansive municipal water supply grids, complex distribution networks, and high-capacity sewage collection systems. Its applications span across multiple demanding sectors:

  • Water Distribution: Secures main lines against pressure drops and physical ground shifts.
  • Storm Drainage: Demonstrates remarkable resilience in lines subject to heavy seasonal flows and debris impact.
  • Agriculture & Recreation: Serves as a vital fluid control component within irrigation frameworks for commercial farms, public park maintenance, and professional golf courses.
  • Industrial Safety: Industrial facility managers rely on these fittings to secure critical fire-fighting suppression systems where failure is simply not an option.


Water Treatment Facilities

Absolutely essential for the rigorous demands of water purification plants and municipal sewage treatment reservoirs. The collar securely connects large-diameter pipes responsible for transporting both highly treated potable water and volatile untreated effluent. Its superior corrosion-resistant architecture easily withstands the harsh, chemically aggressive conditions inherent in modern sanitation and filtration processes, ensuring continuous, uninterrupted facility operation without the need for frequent, costly maintenance shutdowns.


Design Specifications


Compliance & Quality

Manufactured in strict accordance with the globally recognized EN12842 standard, every collar is subjected to uncompromising quality control protocols to guarantee absolute consistency and mechanical reliability. Elevating our commitment to excellence, the production facility operates under a fully certified management framework, enhancing our competitiveness in large-scale procurement bidding. Our operational certifications include:

  • ISO 9001: Certified quality management systems ensuring defect-free manufacturing.
  • ISO 14001: Environmentally responsible production processes.
  • ISO 45001: Strict occupational health and safety standards for all factory personnel.

Each individual unit undergoes rigorous hydrostatic testing to verify it meets and exceeds stringent pressure retention and leakage standards before dispatch.


Material & Coating

Crafted from premium, high-purity UPVC, the core structure offers outstanding impact resistance and long-term dimensional stability under stress. The defining feature is the meticulously applied FBE (Fusion Bonded Epoxy) lining and exterior coating. Utilizing an advanced electrostatic spraying technique followed by high-temperature curing, the epoxy forms a dense, uniform layer with a precise thickness of 0.2-0.3mm. This specific coating thickness provides an impenetrable shield against severe acid and alkali attacks, making the fitting highly suitable for transporting diverse and aggressive fluid types without degrading.


Structural Design

The collar’s architecture features a meticulously calculated, uniform wall thickness designed to distribute internal fluid pressure evenly across the entire connection interface. This optimized structural integrity allows the fitting to confidently achieve a working pressure rating of PN16 (16 bar), easily satisfying the rigorous demands of high-pressure municipal networks and complex industrial fluid systems. The socket openings are precision-machined to perfectly match standard UPVC pipe outer diameters, ensuring a remarkably snug, interference fit that significantly minimizes lateral movement and mechanical stress on the joint over decades of use.


FAQ


Can this collar be used for underground piping?

Yes, the exceptionally tough FBE coating combined with the inherently durable UPVC core material makes this fitting an ideal candidate for direct burial and underground deployment. It actively resists degradation from acidic soil moisture, aggressive subterranean chemical exposure, and physical abrasion caused by natural ground settlement or minor seismic movement.


What is the maximum temperature it can withstand?

The collar is specifically engineered to operate flawlessly within an impressive and precise temperature spectrum ranging from a freezing -40℃ up to a sweltering +80℃. This wide thermal tolerance allows it to handle extremely cold ambient environments as well as moderately warm industrial fluid transfers. It consistently maintains its structural rigidity and sealing performance across these temperature extremes, making it highly versatile for diverse geographical locations and seasonal variations commonly encountered in residential, commercial, and industrial applications.


Do I need to use any sealants with this fitting?

In the vast majority of standard installations, supplementary sealants are entirely unnecessary. The precision-engineered double socket design inherently creates a tight, mechanical interference fit with the UPVC pipes, forming a reliable barrier that prevents leaks on its own. However, for extremely specialized applications involving unusually volatile fluids or absolute maximum pressure thresholds, we recommend consulting our technical engineering team to determine if specific, compatible sealant options might provide an added layer of operational security.


Installation Guidelines & Precautions

To maximize the 50-year lifespan of your piping network and ensure optimal investment returns, adhering to professional installation techniques is critical. While the fitting is designed for intuitive assembly, heavy-duty applications require specific handling procedures to prevent premature wear and maintain the absolute integrity of the fluid pathway.

  • Bracket Fixation for Large Diameters: When deploying larger diameter collars (especially those approaching the Φ800mm range), it is highly recommended to implement independent bracket fixation or concrete thrust blocks near the joint. This crucial step prevents the immense weight of the fluid-filled pipes from exerting undue bending stress or sheer force on the collar itself.
  • Preventing Ring Dislocation: During the insertion process, ensure the UPVC pipe ends are properly chamfered and generously lubricated with an approved compound. Carefully align the pipe perfectly straight before pushing it into the socket to prevent any accidental dislocation, twisting, or pinching of the internal sealing mechanisms.

Following these professional guidelines drastically reduces the risk of on-site installation errors, minimizes future maintenance expenditures, and ensures the entire system operates at peak efficiency from the moment it is pressurized.


Double Socket Collar for UPVC Pipe with precise FBE coating, designed for PN16 working pressure in municipal and industrial fluid networks

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Add: Donggao Village, Bagong Town, Zezhou County, Jincheng City, Shanxi, China
Phone: +86-15135866651
E-mail: dcipipe@hotmail.com
Jincheng Steel Holding Group Co.,Ltd as raw material, and has 6 sets intermediate frequency furnaces, 1 set 70m-long continuous annealing furnace and 2 sets bench annealing furnaces and 4 sets finishing processing lines.

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