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Short Flange U-Section Butterfly Valve Assembly

Engineered for Performance and Reliability: The Short Flange U-Section Butterfly Valve

In demanding industrial pipeline systems, selecting the correct valve is paramount for ensuring operational integrity, minimizing maintenance, and controlling costs. The U-Shape Section Stub Flange Butterfly Valve represents a superior solution designed to meet these rigorous demands. This valve assembly is specifically engineered for applications requiring a space-saving, lightweight, yet robust connection between flanges. Its unique stub flange design, characterized by the distinctive U-shaped section, provides exceptional structural strength and ease of installation, eliminating the need for full flanges on the valve body. This makes it an ideal choice for systems with tight bolt spacing or where weight reduction is a critical factor. Unlike traditional valves, this specialized design ensures a perfect, leak-proof seal and reliable performance under varying pressure and temperature conditions. For engineers and procurement specialists seeking efficient and durable flow control, the U-Shape Section Stub Flange Butterfly Valve offers a compelling combination of practicality and high performance, making it a preferred component in water treatment, HVAC, chemical processing, and general industrial services.


The Short Flange U-Section Butterfly Valve Assembly is meticulously constructed from high-grade materials to guarantee longevity and consistent operation. The disc, often made from ductile iron with various epoxy or nylon coatings, is precision-machined to ensure a bubble-tight shut-off against the resilient seat. The seat itself is typically fabricated from EPDM, NBR, Viton, or other elastomers compatible with a wide range of media, from water and air to certain chemicals. The valve incorporates a sturdy stem, usually in stainless steel, which is securely connected to the disc and passes through the body with minimal friction, facilitated by bushings. This design minimizes torque requirements for operation, whether manual via a lever, gearbox, or automated with an electric or pneumatic actuator. The compact U-section flanges are drilled to standard dimensions, ensuring seamless integration into existing pipeline networks without modification. Every component of the Short Flange U-Section Butterfly Valve Assembly is subjected to rigorous quality control and testing, including shell tests and seat leak tests, to validate its performance before it reaches the end-user.

Detailed Technical Specifications

Below are the key parameters that define the capabilities and options available for the Short Flange U-Section Butterfly Valve.

Primary Design & Performance Features

Material Configuration & Pressure Ratings

Component Standard Material Optional Materials
Body Ductile Iron (GGG-40/50), Epoxy Coated Carbon Steel (WCB), Stainless Steel (CF8/CF8M)
Disc Ductile Iron, Nylon Coated Stainless Steel (304/316), Aluminum Bronze
Stem Stainless Steel (420/304) 17-4PH, 316 Stainless Steel
Seat EPDM (for water, air) NBR, Viton (FKM), Silicon, PTFE
Bushings Self-lubricating Composite / Bronze PTFE, Rylon
Valve Size (DN) Pressure Rating (PN) Test Pressure (Shell / Seat)
DN50 - DN300 PN10 / PN16 PN16 x 1.5 / PN16 x 1.1
DN350 - DN600 PN10 PN10 x 1.5 / PN10 x 1.1

Actuation Options

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