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PN10 PN16 Double Loose 11.25° Bend

Standard: ISO2531/EN545
Size: DN40—1000
Pressure Rate: PN10/PN16
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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Double Loose Flange 11.25° Bend


Understanding the Product


The Double Loose Flange 11.25° Bend is a specialized piping fitting designed for systems requiring both gentle direction changes and flexible assembly. Unlike socket-style fittings, it features a double loose flange connection that allows for easy alignment and disassembly, making it ideal for maintenance-intensive applications. The 11.25° bend angle enables subtle redirection of fluid flow, minimizing pressure loss and ensuring efficient system operation. Engineered for use in demanding environments, this fitting combines the versatility of loose flanges with the precision of a low-angle bend, catering to industrial, municipal, and commercial piping needs.


Core Advantages


Flexible Installation and Maintenance

The loose flange design allows for precise alignment during installation, even in tight spaces. It also enables easy disassembly for pipe cleaning, repairs, or modifications, eliminating the need to cut or replace entire pipe sections.


Secure, Leak-Proof Connection

Despite its flexibility, the double loose flange creates a robust seal when paired with appropriate gaskets. The flange bolts distribute pressure evenly, ensuring a leak-tight connection that withstands high operating pressures (PN10/PN16).


Corrosion and Abrasion Resistance

Featuring FBE (Fusion Bonded Epoxy) internal lining and external coating, the fitting resists corrosion from water, chemicals, and environmental elements. The UPVC core adds abrasion resistance, making it suitable for abrasive fluid applications.


Wide Compatibility

Manufactured to ISO2531/EN545 standards, the fitting is compatible with a range of piping materials and system components. It integrates seamlessly into existing flange-connected systems, reducing replacement costs.


Typical Uses


Industrial Water Supply & Sewage Treatment Facilities

Ideal for industrial water transmission and distribution systems, where the loose flange design facilitates maintenance and the 11.25° bend supports efficient flow routing around equipment and structures.

Used in sewage collection and disposal systems, the fitting’s corrosion resistance and easy disassembly make it perfect for handling wastewater and facilitating regular system cleaning.


Fire Fighting Infrastructure & Municipal Irrigation Projects

Integral to fire fighting systems, the secure flange connection ensures reliable water flow during emergencies. The low-angle bend allows flexible pipe routing while maintaining pressure stability.

Suitable for large-scale municipal irrigation systems, the fitting’s durable construction withstands outdoor conditions, and the loose flange design simplifies installation in complex layouts.


Design Specifications


Compliance with Global Standards

Built in accordance with ISO2531/EN545, a benchmark for flange-connected piping fittings. This ensures adherence to strict quality and performance criteria, including pressure ratings (PN10/PN16) and dimensional consistency.


Material and Coating Technology

Constructed from high-quality UPVC for structural strength and chemical resistance. The FBE internal lining ensures a smooth flow path, while the external FBE coating protects against environmental damage and corrosion.


Flange and Bend Design

The loose flanges feature precision-drilled bolt holes for easy alignment and secure fastening. The 11.25° bend is machined to exact tolerances, ensuring uniform flow direction and minimal turbulence. The overall design balances strength, flexibility, and flow efficiency.


FAQ


What pressure ratings does this fitting support?

It is engineered for PN10 and PN16 pressure ratings, making it suitable for medium-pressure piping systems. Always verify system pressure against the fitting’s ratings before installation.


Can the loose flanges be reused after disassembly?

Yes, the flanges are reusable as long as they are free from damage, corrosion, or gasket residue. Inspect gaskets for wear and replace them during reassembly to maintain a tight seal.


Is this fitting suitable for underground installation?

Yes, the FBE coating and UPVC construction make it resistant to soil moisture and corrosion. Ensure proper backfilling and support to protect the flanges from physical damage.


How does the 11.25° bend improve system performance?

The low-angle bend reduces flow resistance and turbulence, which helps maintain system pressure and efficiency. It is ideal for long pipe runs where gradual direction changes are needed to avoid pressure drops.


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Phone: +86-15135866651
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Phone : +86-15135866651
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