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The PN10 PN16 Double Loose 11.25° Bend is a specialized ductile iron piping fitting engineered for systems requiring gentle directional changes and flexible, maintenance-friendly assembly. Its double loose flange design allows for precise alignment and easy disassembly, while the 11.25° angle minimizes pressure loss for efficient fluid flow in water supply and treatment applications.
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Sourced directly from a premier manufacturer and supplier, the PN10 PN16 Double Loose 11.25° Bend is engineered for precision fluid redirection and effortless assembly. This industrial-grade fitting integrates advanced materials with an innovative loose flange mechanism to optimize system maintenance and operational longevity.
The PN10 PN16 Double Loose 11.25° Bend represents a pinnacle in modern fluid transmission engineering, meticulously crafted to balance structural integrity with operational agility. When handling this fitting, the smooth, flawless finish of the internal and external Fusion Bonded Epoxy (FBE) coating immediately communicates its premium craftsmanship, offering a tactile assurance of its absolute resistance to harsh environmental elements and abrasive media. Designed specifically for complex piping networks that demand subtle directional shifts, the precise 11.25-degree curvature ensures that fluid momentum is maintained while minimizing disruptive turbulence and internal pressure drops. The true ingenuity of this component lies in its dual loose flange architecture. Unlike rigid, fixed-flange alternatives that require painstaking pipeline alignment, the freely rotating flanges allow installation crews to effortlessly match bolt holes even in the most confined, awkward, or subterranean trench environments. This intelligent design transforms what is typically a labor-intensive, time-consuming alignment process into a swift, seamless operation. By significantly reducing the physical strain and time required for both initial setup and future maintenance interventions, this fitting directly enhances project turnaround times and lowers long-term operational costs. It stands as an indispensable asset for demanding infrastructure projects, providing a robust, leak-proof conduit that remains resilient against fluctuating pressures, corrosive soils, and continuous high-volume flow.
Our engineering tolerances and material standards are strictly maintained to ensure seamless integration into your existing pipeline architecture. Below is the comprehensive technical and dimensional data for the Double Loose Flange 11.25° Bend.
| Parameter | Specification |
|---|---|
| Product Name | Double Loose Flange 11.25° Bend |
| Bend Angle | 11.25° |
| Connection Type | Double Loose Flange |
| Pressure Rating | PN10 / PN16 |
| Execution Standard | ISO2531 / EN545 |
| Body Material | High-Quality UPVC |
| Internal Coating | FBE (Fusion Bonded Epoxy) |
| External Coating | FBE (Fusion Bonded Epoxy) |
| Applicable Fluid Temperature | 0°C - 50°C |
| Sealing Gasket Material | EPDM / NBR |
| Quality Inspection | 100% Hydrostatic Test |
| Application Fields | Industrial Water Supply, Sewage Treatment Facilities, Fire Fighting Infrastructure, Municipal Irrigation Projects |
| DN | L (Unit: mm) | Mass (kg) | |
|---|---|---|---|
| PN10 | PN16 | ||
| 40 | 99 | 4.5 | 4.5 |
| 50 | 109 | 5 | 5 |
| 60 | 119 | 6 | 6 |
| 65 | 124 | 6.5 | 6.5 |
| 80 | 113 | 9 | 9 |
| 100 | 115 | 10 | 10 |
| 125 | 111 | 13 | 13 |
| 150 | 113 | 16.5 | 16.5 |
| 200 | 132 | 29 | 29 |
| 250 | 165 | 58 | 56 |
| 300 | 175 | 79 | 79 |
| 350 | 191 | 85 | 91 |
| 400 | 205 | 108 | 117 |
| 450 | 349 | 132 | 150 |
| 500 | 375 | 162 | 192 |
| 600 | 426 | 239 | 290 |
| 700 | 478 | 338 | 362 |
| 800 | 529 | 451 | 482 |
| 900 | 581 | 578 | 619 |
| 1000 | 632 | 746 | 819 |
Engineered to resolve the most common bottlenecks in pipeline construction and maintenance, this fitting delivers tangible improvements to your project execution, resource allocation, and overall system longevity.
The independent rotation of the flanges eliminates the need to manually rotate heavy, cumbersome pipe sections to align bolt holes. This feature dramatically accelerates the installation process, reducing the heavy lifting and precision maneuvering typically required by field crews.
Constructed with a high-quality UPVC core, the fitting provides exceptional structural strength while remaining remarkably resistant to chemical degradation. This advanced material choice ensures a lightweight profile without sacrificing the robust performance required in high-pressure municipal and industrial networks.
The precisely machined 11.25-degree internal curve is designed to guide water and other fluids with minimal friction. By smoothing the transition of the fluid path, the fitting preserves the kinetic energy of the flow, which is critical for long-distance transmission.
Utilizing a high-strength UPVC core complemented by internal and external Fusion Bonded Epoxy (FBE) coatings, this fitting delivers outstanding resistance to water erosion, chemical corrosion, and mechanical wear. The flawless FBE finish creates an impenetrable barrier against soil moisture, making it perfectly suited for direct underground burial and significantly extending the operational lifespan of the entire piping network.
Specifically engineered for high-frequency maintenance environments, the double loose flange architecture grants unprecedented flexibility during construction. Crews can achieve precise bolt-hole alignment effortlessly, even in cramped or complex layouts. Furthermore, it allows for rapid dismantling without severing the main pipeline, drastically cutting down downtime and labor costs during system cleaning, repairs, or upgrades.
The meticulously machined 11.25° low-angle bend is purposefully designed for systems requiring gradual directional shifts. This precise geometry effectively mitigates water resistance, dampens turbulence, and minimizes pressure loss across the network, thereby guaranteeing the highly efficient and stable operation of long-distance fluid transmission systems.
When the flange bolts are torqued, they distribute compressive forces evenly across industrial-grade sealing gaskets (such as EPDM or NBR), forging an impenetrable, leak-proof joint. Strictly adhering to PN10 and PN16 medium-pressure ratings, this component ensures absolute safety and zero-leakage performance under the demanding high-pressure conditions of industrial water treatment and emergency fire suppression networks.
Manufactured in strict accordance with ISO2531 and EN545 international benchmarks for flange-connected fittings, this product guarantees absolute dimensional consistency and premium quality control. It integrates flawlessly with existing flanged systems and diverse piping materials, empowering procurement teams to effectively manage inventory and minimize replacement expenditures.
Driven by its exceptional durability, anti-corrosive properties, and maintenance-friendly design, this fitting is the ideal solution for a multitude of rigorous engineering projects. It performs flawlessly in industrial water conveyance, municipal sewage collection and treatment, high-pressure fire protection grids, and expansive outdoor municipal irrigation architectures.
Selecting the right manufacturing partner is just as critical as selecting the right component. We provide more than just premium piping solutions; we deliver reliability, consistency, and engineering excellence tailored to the exact scale and demands of your operations.
Every single fitting that leaves our production floor is subjected to rigorous testing protocols. We do not believe in random batch sampling when it comes to pressure integrity and system safety.
We understand that project delays translate directly to financial losses and logistical nightmares. Our production and logistics frameworks are optimized to ensure that your materials arrive precisely when the trench is ready.
Below are detailed answers to common technical inquiries regarding the installation, maintenance, and performance of our double loose flange fittings.
UPVC offers an exceptional strength-to-weight ratio, making it significantly easier to handle, transport, and install without the need for heavy lifting equipment. Additionally, it possesses innate immunity to galvanic corrosion and scaling, ensuring the internal diameter remains completely unobstructed over decades of use. This is particularly beneficial in aggressive soil conditions or when transporting mildly corrosive industrial fluids.
The FBE coating is thermally cured to form a highly cross-linked polymer network that bonds molecularly with the substrate. This creates a tough, abrasion-resistant shield that is highly impermeable to soil moisture, chlorides, and microbial-induced corrosion. It makes the fitting exceptionally reliable for long-term underground installations without the need for additional poly-wrapping or cathodic protection.
Yes, the loose flanges are drilled strictly according to ISO2531 and EN545 standards for PN10 and PN16 pressure ratings. They will mate perfectly with any standard fixed flange, valve, or pump casing that shares the same nominal diameter (DN) and pressure rating, provided the correct gaskets and bolting procedures are utilized during assembly.
For standard water supply, sewage, and municipal irrigation, EPDM (Ethylene Propylene Diene Monomer) gaskets are highly recommended due to their excellent resistance to weathering, ozone, and water. If the fluid being transported contains oils, hydrocarbons, or specific industrial chemicals, NBR (Nitrile Butadiene Rubber) gaskets should be specified to prevent gasket degradation and ensure a permanent, leak-proof seal.
Absolutely. The shallow 11.25-degree angle is specifically engineered to minimize flow separation and turbulence, which are common causes of vibration and cavitation in high-velocity systems. By providing a smooth, gradual transition, it protects downstream valves and equipment while maintaining the peak hydraulic efficiency of the pumping station.
During disassembly, carefully unbolt the loose flanges and slide them back along the pipe. The main body of the bend can then be removed laterally without disturbing adjacent pipe sections. To reuse the fitting, thoroughly clean the flange faces and inspect the FBE coating for any mechanical damage. As long as the structural integrity and coating are intact, the fitting can be safely reinstalled with a new set of EPDM or NBR gaskets to guarantee a fresh, reliable seal.
